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Documentation > MAC-PAC Reference Library > Manufacturing > Design Engineering > Key Concepts and Procedures > Define Product Structures > Change a Product Structure

Change a Product Structure

 

There are three ways to change product structures:

·     Change each individual parent/component relationship record separately.  Use the Product Structure Maintenance conversation.

·     Change all components in one parent part's product structure at the same time.  Use the Multi-line Product Structure Maintenance conversation.

·     Use the Mass Change feature to replace one component with another on all product structure records where it appears.  This feature can also be used to change the quantity per batch for one part everywhere it is used.

1.   Define the engineering change order authorizing the product structure change.

a.   Use the Engineering Changes Inquiry conversation to determine what engineering changes already exist.

b.   Select the Engineering Change Maintenance menu option.

c.   Specify the engineering change order number and effectivity dates.

2.   Change the bill of material.  Use one of the following conversations.  Note that on all changes, you should enter either the engineering change order number OR the date corresponding to the order, if engineering change orders are being used.

Product Structure Maintenance conversation:

a.   Review the Multi-Level Explosion Bill of Material inquiry or report to determine the sequence number of the component to be changed.

b.   Select the Product Structure Maintenance menu option.

c.   On the Function Select screen, specify the parent and component whose relationship is changing and the sequence number of the component.  Then specify whether you will be adding, changing, or deleting the component.  A mass deletion will delete the component each time it appears on the single-level bill of material for this parent.

d.   If you are changing the information for the component, type over the data displayed on the detail screen.

Multi-line Product Structure Maintenance conversation: 

a.   See the Create a Product Structure procedure for more information about how to work with this screen.

Product Structure Mass Change conversation:

a.   Review the Product Structure Mass Maintenance key concept in the Key Concepts section of this manual.

b.   Select the Product Structure Mass Change Maintenance menu option.

c.   Enter the information on the screen.  Enter the name of the replacing component and/or enter a factor to be used in changing the Quantity Per Batch field.

d.   Select the Transaction Review menu option to review that the transactions created  were the ones you expected.

e.   Select the Release Submitted Jobs menu option and submit the Product Structure job to process the mass change.

3.   Use the ECO Where-Used Inquiry conversation to verify that all product structures were changed appropriately for the engineering change order.

4.   Create a new revision level for the Optional part.  The Revision Level Generation flag, specified on the Part Master Maintenance Description screen, determines whether the part's revision level is created automatically or manually.

a.   To create the revision level manually:

Use the Revision Level Inquiry conversation to determine what revision levels already exist for the part.

Select the Revision Level Maintenance menu option.  Note that if the Requirements Planning module is installed, revision level generation is always run at the beginning of the MRP batch job stream.

Add a revision level, enter a description of the level, and specify the same effectivity data that you specified on the product structure record.

b.   To create the revision level automatically:

Select the Revision Level Generation menu option.

Submit the Revision Level Generation job using the Release Submitted Jobs menu option.

Review the Changed Revision Levels Report (which is created automatically during the generation process) to see if any manual revision levels were modified during the process.  If necessary, use the manual process (described in step a) to make any changes.

5.   If necessary, generate new costs in Product Costing or a new production schedule in Master Scheduling and Requirements Planning to take into account the product structure change.

6.   Run the daily update program.

a.   Select the Revision Level Daily Update menu option.

b.   Submit the Rev Lvl Daily Update job using the Release Submitted Jobs menu option.

c.   Review the Effective Revision Level Changes Report, created automatically during the update process, to determine what revision levels will be coming into effect for each part on the next shop day.

7.   Review the Pending Engineering Changes Report to determine what engineering changes will be coming into effect in the near future.

a.   Select the Bills of Material/Eng Change option.

b.   Request the Pending Engineering Change Report.

c.   Submit the Pending Eng Change job using the Release Submitted Jobs menu option.