How To Fix REMPT321 - Scheduling and capacity calculation of & have different bases

SAP Error Message - Details

• Message type: E = Error

• Message class: REMPT - Message Class for REM Planning Table (Rel. 99)

• Message number: 321

• Message text: Scheduling and capacity calculation of & have different bases

What causes this issue?

The basis used for scheduling and to calculate the capacity
requirements are different. This can cause inconsistencies.
A possible reason for this is that you entered a capacity in the
"Capacity" field in the scheduling view of the work center. Please
refer to the OSS note 119596 for more detailed informatin.

How to fix this error?

Do not use the "Capacity" field in the scheduling view of the work
center if you work with the REM planning table.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message REMPT321 - Scheduling and capacity calculation of & have different bases ?

  The SAP error message REMPT321 indicates that there is a discrepancy between the scheduling and capacity calculation bases for a particular production order or process. This typically occurs in the context of production planning and scheduling within SAP's Advanced Planning and Optimization (APO) or Production Planning (PP) modules.
  Cause:
  The error can arise due to several reasons, including:
  
  Different Planning Versions: The scheduling and capacity calculations may be based on different planning versions or scenarios.
  Inconsistent Data: There may be inconsistencies in the master data, such as routing, work center, or production resources.
  Capacity Planning Settings: The settings for capacity planning and scheduling may not align, leading to different bases being used for calculations.
  Changes in Master Data: If there have been recent changes to the master data (like work centers or production resources) that have not been updated in all relevant areas, this can lead to discrepancies.
  Resource Availability: If the resource availability is not correctly defined or updated, it can lead to different scheduling and capacity calculations.
  
  Solution:
  To resolve the REMPT321 error, you can take the following steps:
  
  Check Planning Versions: Ensure that both scheduling and capacity calculations are using the same planning version. If they are not, align them to use the same version.
  Review Master Data: Verify the master data for the production order, including routing, work centers, and production resources. Ensure that all relevant data is consistent and up to date.
  Recalculate Capacity: If there have been changes to the work center or production resources, recalculate the capacity to ensure that it reflects the current settings.
  Check Configuration Settings: Review the configuration settings for capacity planning and scheduling to ensure they are aligned and correctly set up.
  Run Consistency Checks: Use SAP tools to run consistency checks on the production order and related data to identify any discrepancies.
  Consult Documentation: Refer to SAP documentation or notes related to the specific error message for additional guidance and troubleshooting steps.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like CO02 (Change Production Order) or MD04 (Stock/Requirements List) to investigate the production order and its related data.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  User Forums: Consider visiting SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the root cause of the REMPT321 error and implement the necessary corrections to resolve it.