How To Fix CRD_REQBUILD399 - **** Check of Requirements List/Combinations ****

SAP Error Message - Details

• Message type: E = Error

• Message class: CRD_REQBUILD - Credentialing: Generate Requirements

• Message number: 399

• Message text: **** Check of Requirements List/Combinations ****

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CRD_REQBUILD399 - **** Check of Requirements List/Combinations **** ?

  The SAP error message CRD_REQBUILD399, which states "Check of Requirements List/Combinations," typically occurs in the context of production planning and material requirements planning (MRP) when there are issues with the requirements list or the combinations of requirements in the system.
  Cause:
  
  Inconsistent Data: The error may arise due to inconsistent or incomplete data in the requirements list. This could include missing or incorrect entries for materials, quantities, or dates.
  Invalid Combinations: The system may be trying to process combinations of requirements that are not valid according to the defined rules in the system.
  Configuration Issues: There may be configuration issues in the MRP settings or in the material master data that lead to this error.
  Missing Master Data: Required master data (like BOMs, routing, or material master records) may be missing or incorrectly set up.
  
  Solution:
  
  Check Requirements List: Review the requirements list for the material in question. Ensure that all entries are correct and complete.
  Validate Combinations: Check the combinations of requirements to ensure they are valid. This may involve reviewing the settings in the MRP configuration.
  Review Master Data: Ensure that all necessary master data (BOMs, routing, material master) is correctly set up and available in the system.
  Run MRP Again: After making corrections, run the MRP process again to see if the error persists.
  Consult Documentation: Refer to SAP documentation or notes related to this error message for specific guidance or patches that may address the issue.
  SAP Support: If the issue cannot be resolved internally, consider reaching out to SAP support for assistance.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like MD04 (Stock/Requirements List) or MD02 (MRP Run) to analyze and manage the requirements.
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or solutions for this specific error.
  MRP Configuration: Familiarize yourself with MRP configuration settings in SPRO (SAP Project Reference Object) to ensure everything is set up correctly.
  
  By following these steps, you should be able to identify the root cause of the CRD_REQBUILD399 error and implement a solution to resolve it.