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<p>Thanks Tom and Phil Its good to know there is a simple solution,
and something more comprehensive when we need it.</p>
<p>So we are allowed to have two or more instances of a product in a
STEP file. The instances have the same prototype (to use the DT
terminology), but different characteristics.</p>
<p>At the start of manufacturing, they may only have different
placements, but later on they may get different colors, properties
and features, and they may need to meet different assembly
constraints.</p>
<p>In the data, each instance (digital twin) is defined by the same
product, the same product_definition_formation, and a different
product_definition with its own serial number.<br>
</p>
<p>Martin<br>
</p>
<div class="moz-cite-prefix">On 7/15/2022 11:48 AM, Thomas Thurman
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:72C7623D-9611-4C7E-A18A-7C8B0229A9AA@imonmail.com">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<div class="">Dear All,</div>
<div class="">Some information on serial numbers:<br class="">
<div class=""><br class="">
</div>
<div class="">I asked Phil Spiby about serial numbers in
application of life-cycle support and he mentioned two methods
for as-built product he was aware of:</div>
<div class="">A-use the serial number as the product identifier</div>
<div class="">B-use a classification approach to not only add
serial number but also organizational information.</div>
<div class=""><br class="">
</div>
<div class="">ISO/TS 10303-1147:2019 Application module:
Manufacturing configuration effectivity</div>
<div class="">is of interest.</div>
<div class="">A partial extract is provided for reference.</div>
<div class=""><br class="">
</div>
<div class="">Best Regards,</div>
<div class="">Tom Thurman</div>
<div class=""><font class="" face="-webkit-standard"><span
class=""><br class="">
</span></font></div>
<div class=""><font class="" face="-webkit-standard"><span
class="">scope:</span></font></div>
<p style="font-family: -webkit-standard;" class="">This part of
ISO 10303 specifies the application module Manufacturing
configuration effectivity. <a name="inscope" class=""
moz-do-not-send="true"></a>The following are within the
scope of this part of ISO 10303: </p>
<ul style="font-family: -webkit-standard;" class="">
<li class="">serial number-based condition for the use of a
component in a product proposed to market;</li>
<li class="">production lot number-based condition for the use
of a component in a product proposed to market;</li>
<li class="">production date-based condition for the use of a
component in a product proposed to market.</li>
</ul>
<div class=""><font class="" face="-webkit-standard"><span
class="">Here are the ARM definitions</span></font></div>
<div class="">
<h2 style="font-family: -webkit-standard;" class=""><a
name="entities" class="" moz-do-not-send="true">4.2 ARM
entity definitions</a></h2>
<p style="font-family: -webkit-standard;" class="">This
subclause specifies the ARM entities for this module. Each
ARM application entity is an atomic element that embodies a
unique application concept and contains attributes
specifying the data elements of the entity. The ARM entities
and definitions are specified below. </p>
<h2 style="font-family: -webkit-standard;" class=""><a
name="manufacturing_configuration_effectivity_arm.dated_configuration"
class="" moz-do-not-send="true">4.2.1 Dated_configuration</a> <a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/armexpg2.htm"
target="" class="" moz-do-not-send="true"><img
alt="EXPRESS-G" apple-inline="yes"
id="DF8299E5-D816-434A-86B2-8E5C74FDC2C8"
src="cid:part1.i0GZCma7.M1BprPwE@steptools.com" class=""
border="0" align="middle"></a><a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/5_mapping.htm#aeentitydated_configuration"
class="" moz-do-not-send="true"><img alt="Mapping table"
apple-inline="yes"
id="81B1C784-658D-40B8-BD7A-28FF1CC472EF"
src="cid:part2.nk370h1N.IIPSQfPA@steptools.com" class=""
border="0" align="middle"></a></h2>
<span style="font-family: -webkit-standard; font-size:
medium;" class="">A </span><b style="font-family:
-webkit-standard;" class="">Dated_configuration</b><span
style="font-family: -webkit-standard; font-size: medium;"
class=""> is a type of </span><a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/4_info_reqs.htm#manufacturing_configuration_effectivity_arm.manufacturing_configuration"
style="font-family: -webkit-standard;" class=""
moz-do-not-send="true"><b class="">Manufacturing_configuration</b></a><span
style="font-family: -webkit-standard; font-size: medium;"
class=""> whose effectivity domain is a time interval.</span>
<p style="font-family: -webkit-standard;" class="">The
interval of time during which the <a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/specified_product/sys/4_info_reqs.htm#specified_product_arm.product_specification"
class="" moz-do-not-send="true"><b class="">Product_specification</b></a> has
been, is, or will be produced.</p>
<div style="font-family: -webkit-standard;" class=""><br
class="webkit-block-placeholder">
</div>
<p style="font-family: -webkit-standard;" class=""><u class="">EXPRESS
specification:</u></p>
<p style="font-family: -webkit-standard;" class=""><code
class="">*)<br class="">
ENTITY Dated_configuration<br class="">
SUBTYPE OF (<a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/4_info_reqs.htm#manufacturing_configuration_effectivity_arm.manufacturing_configuration"
class="" moz-do-not-send="true">Manufacturing_configuration</a>);<br
class="">
SELF\<a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/configuration_effectivity/sys/4_info_reqs.htm#configuration_effectivity_arm.item_usage_effectivity"
class="" moz-do-not-send="true">Item_usage_effectivity</a>.effectivity_domain
: <a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/effectivity/sys/4_info_reqs.htm#effectivity_arm.dated_effectivity"
class="" moz-do-not-send="true">Dated_effectivity</a>;<br
class="">
END_ENTITY;<br class="">
(*</code></p>
<p style="font-family: -webkit-standard;" class=""><u class="">Attribute
definitions:</u></p>
<p class="expressdescription" style="font-family:
-webkit-standard;"><b class=""><a
name="manufacturing_configuration_effectivity_arm.dated_configuration.effectivity_domain"
class="" moz-do-not-send="true">effectivity_domain: </a></b>the <a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/effectivity/sys/4_info_reqs.htm#effectivity_arm.dated_effectivity"
class="" moz-do-not-send="true"><b class="">Dated_effectivity</b></a> that
defines the effectivity domain.</p>
<h2 style="font-family: -webkit-standard;" class=""><a
name="manufacturing_configuration_effectivity_arm.lot_configuration"
class="" moz-do-not-send="true">4.2.2 Lot_configuration</a> <a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/armexpg2.htm"
target="" class="" moz-do-not-send="true"><img
alt="EXPRESS-G" apple-inline="yes"
id="DFC8FED6-265C-41D0-9A21-A1CBFA969AC7"
src="cid:part1.i0GZCma7.M1BprPwE@steptools.com" class=""
border="0" align="middle"></a><a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/5_mapping.htm#aeentitylot_configuration"
class="" moz-do-not-send="true"><img alt="Mapping table"
apple-inline="yes"
id="735BD1CD-7C8A-4225-90BF-EF302CC3B067"
src="cid:part2.nk370h1N.IIPSQfPA@steptools.com" class=""
border="0" align="middle"></a></h2>
<span style="font-family: -webkit-standard; font-size:
medium;" class="">A </span><b style="font-family:
-webkit-standard;" class="">Lot_configuration</b><span
style="font-family: -webkit-standard; font-size: medium;"
class=""> is a type of </span><a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/4_info_reqs.htm#manufacturing_configuration_effectivity_arm.manufacturing_configuration"
style="font-family: -webkit-standard;" class=""
moz-do-not-send="true"><b class="">Manufacturing_configuration</b></a><span
style="font-family: -webkit-standard; font-size: medium;"
class=""> whose effectivity domain is identified by a
production lot identifier.</span>
<p style="font-family: -webkit-standard;" class="">The lot is
a production lot of the <a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/specified_product/sys/4_info_reqs.htm#specified_product_arm.product_specification"
class="" moz-do-not-send="true"><b class="">Product_specification</b></a> under
consideration.</p>
<div style="font-family: -webkit-standard;" class=""><br
class="webkit-block-placeholder">
</div>
<p style="font-family: -webkit-standard;" class=""><u class="">EXPRESS
specification:</u></p>
<p style="font-family: -webkit-standard;" class=""><code
class="">*)<br class="">
ENTITY Lot_configuration<br class="">
SUBTYPE OF (<a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/4_info_reqs.htm#manufacturing_configuration_effectivity_arm.manufacturing_configuration"
class="" moz-do-not-send="true">Manufacturing_configuration</a>);<br
class="">
SELF\<a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/configuration_effectivity/sys/4_info_reqs.htm#configuration_effectivity_arm.item_usage_effectivity"
class="" moz-do-not-send="true">Item_usage_effectivity</a>.effectivity_domain
: <a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/effectivity/sys/4_info_reqs.htm#effectivity_arm.lot_effectivity"
class="" moz-do-not-send="true">Lot_effectivity</a>;<br
class="">
END_ENTITY;<br class="">
(*</code></p>
<p style="font-family: -webkit-standard;" class=""><u class="">Attribute
definitions:</u></p>
<p class="expressdescription" style="font-family:
-webkit-standard;"><b class=""><a
name="manufacturing_configuration_effectivity_arm.lot_configuration.effectivity_domain"
class="" moz-do-not-send="true">effectivity_domain: </a></b>the <a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/effectivity/sys/4_info_reqs.htm#effectivity_arm.lot_effectivity"
class="" moz-do-not-send="true"><b class="">Lot_effectivity</b></a> that
defines the effectivity domain.</p>
<h2 style="font-family: -webkit-standard;" class=""><a
name="manufacturing_configuration_effectivity_arm.manufacturing_configuration"
class="" moz-do-not-send="true">4.2.3
Manufacturing_configuration</a> <a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/armexpg2.htm"
target="" class="" moz-do-not-send="true"><img
alt="EXPRESS-G" apple-inline="yes"
id="503E91DE-EED2-4BB4-ADCD-3C907B106970"
src="cid:part1.i0GZCma7.M1BprPwE@steptools.com" class=""
border="0" align="middle"></a><a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/5_mapping.htm#aeentitymanufacturing_configuration"
class="" moz-do-not-send="true"><img alt="Mapping table"
apple-inline="yes"
id="D4011586-31A6-4489-B8F5-C233C611B9A5"
src="cid:part2.nk370h1N.IIPSQfPA@steptools.com" class=""
border="0" align="middle"></a></h2>
<span style="font-family: -webkit-standard; font-size:
medium;" class="">A </span><b style="font-family:
-webkit-standard;" class="">Manufacturing_configuration</b><span
style="font-family: -webkit-standard; font-size: medium;"
class=""> is a type of </span><a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/configuration_effectivity/sys/4_info_reqs.htm#configuration_effectivity_arm.item_usage_effectivity"
style="font-family: -webkit-standard;" class=""
moz-do-not-send="true"><b class="">Item_usage_effectivity</b></a><span
style="font-family: -webkit-standard; font-size: medium;"
class=""> that specifies a condition for the use of a </span><a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/product_occurrence/sys/4_info_reqs.htm#product_occurrence_arm.product_occurrence"
style="font-family: -webkit-standard;" class=""
moz-do-not-send="true"><b class="">Product_occurrence</b></a><span
style="font-family: -webkit-standard; font-size: medium;"
class=""> in a product represented by an instance of </span><a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/specified_product/sys/4_info_reqs.htm#specified_product_arm.product_specification"
style="font-family: -webkit-standard;" class=""
moz-do-not-send="true"><b class="">Product_specification</b></a><span
style="font-family: -webkit-standard; font-size: medium;"
class="">.</span>
<p style="font-family: -webkit-standard;" class="">Only
specializations of <b class="">Manufacturing_configuration</b> shall
be instantiated.</p>
<div style="font-family: -webkit-standard;" class=""><br
class="webkit-block-placeholder">
</div>
<p style="font-family: -webkit-standard;" class=""><u class="">EXPRESS
specification:</u></p>
<p style="font-family: -webkit-standard;" class=""><code
class="">*)<br class="">
ENTITY Manufacturing_configuration<br class="">
ABSTRACT SUPERTYPE OF (ONEOF (<a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/4_info_reqs.htm#manufacturing_configuration_effectivity_arm.serial_configuration"
class="" moz-do-not-send="true">Serial_configuration</a>,<br
class="">
<a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/4_info_reqs.htm#manufacturing_configuration_effectivity_arm.dated_configuration"
class="" moz-do-not-send="true">Dated_configuration</a>,<br
class="">
<a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/4_info_reqs.htm#manufacturing_configuration_effectivity_arm.lot_configuration"
class="" moz-do-not-send="true">Lot_configuration</a>))<br
class="">
SUBTYPE OF (<a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/configuration_effectivity/sys/4_info_reqs.htm#configuration_effectivity_arm.item_usage_effectivity"
class="" moz-do-not-send="true">Item_usage_effectivity</a>);<br
class="">
concerned_organization : SET[0:?] OF <a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/person_organization/sys/4_info_reqs.htm#person_organization_arm.organization"
class="" moz-do-not-send="true">Organization</a>;<br
class="">
WHERE<br class="">
WR1: ('MANUFACTURING_CONFIGURATION_EFFECTIVITY_ARM.' +
'PRODUCT_SPECIFICATION') IN
TYPEOF(resolved_configuration.configuration);<br class="">
WR2: ('PRODUCT_OCCURRENCE_ARM.' + 'PRODUCT_OCCURRENCE')
IN
TYPEOF(item_usage_relationship\View_definition_relationship.related_view);<br
class="">
END_ENTITY;<br class="">
(*</code></p>
<p style="font-family: -webkit-standard;" class=""><u class="">Attribute
definitions:</u></p>
<p class="expressdescription" style="font-family:
-webkit-standard;"><b class=""><a
name="manufacturing_configuration_effectivity_arm.manufacturing_configuration.concerned_organization"
class="" moz-do-not-send="true">concerned_organization: </a></b>the
set of <a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/person_organization/sys/4_info_reqs.htm#person_organization_arm.organization"
class="" moz-do-not-send="true"><b class="">Organization</b></a> for
which the <b class="">Manufacturing_configuration</b> is
valid. </p>
<p style="font-family: -webkit-standard;" class="">In the case
where the <b class="">concerned_organization</b> is an empty
set, the <b class="">Manufacturing_configuration</b> is
relevant to any organization that may consider the proposed
product.</p>
<p style="font-family: -webkit-standard;" class=""><u class="">Formal
propositions:</u></p>
<p class="expressdescription" style="font-family:
-webkit-standard;"><b class=""><a
name="manufacturing_configuration_effectivity_arm.manufacturing_configuration.wr:wr1"
class="" moz-do-not-send="true">WR1: </a></b>The context
for which the configuration conditions are characterized
shall be a <a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/specified_product/sys/4_info_reqs.htm#specified_product_arm.product_specification"
class="" moz-do-not-send="true"><b class="">Product_specification</b></a>.</p>
<p class="expressdescription" style="font-family:
-webkit-standard;"><b class=""><a
name="manufacturing_configuration_effectivity_arm.manufacturing_configuration.wr:wr2"
class="" moz-do-not-send="true">WR2: </a></b>The object
for which a conditional use case is specified shall be a <a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/product_occurrence/sys/4_info_reqs.htm#product_occurrence_arm.product_occurrence"
class="" moz-do-not-send="true"><b class="">Product_occurrence</b></a>.</p>
<h2 style="font-family: -webkit-standard;" class=""><a
name="manufacturing_configuration_effectivity_arm.serial_configuration"
class="" moz-do-not-send="true">4.2.4 Serial_configuration</a> <a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/armexpg2.htm"
target="" class="" moz-do-not-send="true"><img
alt="EXPRESS-G" apple-inline="yes"
id="5737A158-3E2C-4A17-8673-2D3EDB68D406"
src="cid:part1.i0GZCma7.M1BprPwE@steptools.com" class=""
border="0" align="middle"></a><a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/5_mapping.htm#aeentityserial_configuration"
class="" moz-do-not-send="true"><img alt="Mapping table"
apple-inline="yes"
id="CB75A403-BE32-4356-80B7-F42B3EC716E2"
src="cid:part2.nk370h1N.IIPSQfPA@steptools.com" class=""
border="0" align="middle"></a></h2>
<span style="font-family: -webkit-standard; font-size:
medium;" class="">A </span><b style="font-family:
-webkit-standard;" class="">Serial_configuration</b><span
style="font-family: -webkit-standard; font-size: medium;"
class=""> is a type of </span><a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/4_info_reqs.htm#manufacturing_configuration_effectivity_arm.manufacturing_configuration"
style="font-family: -webkit-standard;" class=""
moz-do-not-send="true"><b class="">Manufacturing_configuration</b></a><span
style="font-family: -webkit-standard; font-size: medium;"
class=""> whose effectivity domain is an interval of serial
numbers.</span>
<p style="font-family: -webkit-standard;" class="">The serial
numbers of the <a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/specified_product/sys/4_info_reqs.htm#specified_product_arm.product_specification"
class="" moz-do-not-send="true"><b class="">Product_specification</b></a> under
consideration are in the given interval of serial numbers.</p>
<div style="font-family: -webkit-standard;" class=""><br
class="webkit-block-placeholder">
</div>
<p style="font-family: -webkit-standard;" class=""><u class="">EXPRESS
specification:</u></p>
<p style="font-family: -webkit-standard;" class=""><code
class="">*)<br class="">
ENTITY Serial_configuration<br class="">
SUBTYPE OF (<a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/manufacturing_configuration_effectivity/sys/4_info_reqs.htm#manufacturing_configuration_effectivity_arm.manufacturing_configuration"
class="" moz-do-not-send="true">Manufacturing_configuration</a>);<br
class="">
SELF\<a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/configuration_effectivity/sys/4_info_reqs.htm#configuration_effectivity_arm.item_usage_effectivity"
class="" moz-do-not-send="true">Item_usage_effectivity</a>.effectivity_domain
: <a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/effectivity/sys/4_info_reqs.htm#effectivity_arm.serial_effectivity"
class="" moz-do-not-send="true">Serial_effectivity</a>;<br
class="">
END_ENTITY;<br class="">
(*</code></p>
<p style="font-family: -webkit-standard;" class=""><u class="">Attribute
definitions:</u></p>
<p class="expressdescription" style="font-family:
-webkit-standard;"><b class=""><a
name="manufacturing_configuration_effectivity_arm.serial_configuration.effectivity_domain"
class="" moz-do-not-send="true">effectivity_domain: </a></b>the <a
href="file:///Users/tom/Library/Mobile%20Documents/com~apple~CloudDocs/step_parts/N11017_SMRL_v9_rc1_20220203/data/modules/effectivity/sys/4_info_reqs.htm#effectivity_arm.serial_effectivity"
class="" moz-do-not-send="true"><b class="">Serial_effectivity</b></a> that
defines the effectivity domain.</p>
<div><br class="">
</div>
</div>
</div>
</blockquote>
<pre class="moz-signature" cols="72">--
Martin Hardwick
President STEP Tools, Inc.
Cell: 518 253-0596
"There are billions of STEP files and millions of STEP-NC files"</pre>
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