How To Fix PIC01091 - MPN-MRP sets &1 (&2) and &3 (&4) combined into set &3 (&4)

SAP Error Message - Details

• Message type: E = Error

• Message class: PIC01 - Parts Interchangeability Message Class

• Message number: 091

• Message text: MPN-MRP sets &1 (&2) and &3 (&4) combined into set &3 (&4)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message PIC01091 - MPN-MRP sets &1 (&2) and &3 (&4) combined into set &3 (&4) ?

  The SAP error message PIC01091 typically relates to the Material Planning (MRP) functionality within the SAP system, specifically concerning the handling of MPN (Manufacturer Part Number) and MRP sets. This message indicates that there is a combination of MPN-MRP sets that are being merged or combined, which may not be intended or may require further attention.
  Cause:
  
  Duplicate MPN-MRP Sets: The error often arises when there are duplicate entries or conflicting MPN-MRP sets in the system. This can happen if multiple MPNs are mapped to the same material or if there are inconsistencies in the configuration of MPNs and their associated MRP settings.
  Configuration Issues: Incorrect configuration in the MPN settings or MRP parameters can lead to this error. This may include incorrect assignment of MPNs to materials or issues in the MRP settings for those materials.
  Data Integrity Issues: If there are inconsistencies in the master data, such as missing or incorrect entries in the material master or MPN master data, this can trigger the error.
  
  Solution:
  
  Review MPN-MRP Configuration: Check the configuration of MPNs and MRP settings in the system. Ensure that there are no duplicate or conflicting entries. You can do this by navigating to the relevant transaction codes (e.g., MM03 for material master, or using transaction codes related to MPN management).
  Data Cleanup: If duplicates or inconsistencies are found, clean up the data by removing or correcting the conflicting entries. This may involve deleting unnecessary MPNs or reassigning MPNs to the correct materials.
  Check MRP Settings: Review the MRP settings for the materials involved. Ensure that the MRP parameters are correctly set up and that they align with the intended planning strategy.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on MPN and MRP configurations. This can provide insights into best practices and common pitfalls.
  Testing: After making changes, perform tests to ensure that the error does not reoccur. Monitor the MRP runs to confirm that the MPN-MRP sets are functioning as expected.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM03 (Display Material), MM02 (Change Material), and MPN-related transactions.
  SAP Notes: Check for any SAP Notes related to MPN and MRP issues. SAP frequently releases notes that address known issues and provide solutions or workarounds.
  User Forums and Communities: Engage with SAP user communities or forums where similar issues may have been discussed. This can provide additional insights and solutions from other users who have faced the same error.
  
  By following these steps, you should be able to identify the root cause of the PIC01091 error and implement a solution to resolve it.