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Subject: PLCS backward compatability
Hi During our analysis of the changes made by other APS to the
underlying modules of AP239 we have identified that they have change the assemblies
modules. In doing this change they have “lost “ 3
inherited attributes from next_assembly_usage We do not explicitly use these attributes in PLCS
perspective …. However, the change will make all existing P21 files invalid. We have also identified that the product-category module should
be removed from the AP as we are using reference data for this categorizing
parts. When discussing this with AP210, AP233, AP203 we agreed that we should
remove product-category completely. This is desirable, but again, will make existing Part21 and
Part 28 file incompatible. The ap239 ed2 development team would like some guidance from
the TOG as to what the position should be wrt to backward compatibility. Do we insist on backward compatibility, or do we fix the schema? My view is that we should fix the schema and document the changes.
I have also not raised this issue with the wider TC – should
we? Regards -------------------------------------------------------------------------------- Eurostep
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