Serial Change Process
The serial change process is the standard change process. This
means that when multiple changes are being made to a part, the changes must be
released in sequence. For example, Part PT-001020 1 is being modified under
CA1. Under CA1, a new revision of the part is created, Part PT-001020 2, and
changes are made to this revision. At the same time CA2 is required to make
changes to the same part and has created revision Part PT-001020 3 to implement
those changes. Under the serial change process, CA1 must be released before
CA2. CA2 cannot go to release first because a previous revision of its affected
part has not been released.
Parallel Change Process
A parallel change process allows multiple changes to a single
part to be released in any order. For example, if CA1 and CA2 are making
changes to Part PT-001020 1 it is not required to release CA1 before CA2.
When a connected CA is promoted from the Create to the Define
Components state, a part version is created instead of a revision. A part
version is a
clone of the original affected part. A new part
version object is created for each CA. Part versions are also shown in the
Proposed Changes page of a CA. For example, Part
PT-001020 1 is versioned to Part PT-001020 1-001. When the CA is released, the
part version object is inserted at the end of the original part's revision
chain, thus allowing CAs to be released in any order, and the part revision
chain sequence is maintained.
The part versions are shown in the Proposed Changes page, in the 'New Rev' column. See Proposed Changes Page. The function of the part versions
is the exact same as the new part revisions that are created in the serial change
process. The part version is the object where the changes are going to take place.
You can modify and create markups within the context of the part version, the same
as you can with part revisions. The only difference is that when using the part
revision, you are required to release the CA (and parts) in the order they were
created. Using the part version allows you to release the CAs (and parts) in any
order.
Note:
Whether the change process is serial or parallel, a part,
part version, or part revision can be added to only one CO at a time.