How To Fix OQ_C251 - &1 Material difference (&3) between &2 is not standard (&4)

SAP Error Message - Details

• Message type: E = Error

• Message class: OQ_C - IS-Oil SSR : Message pool Fuels

• Message number: 251

• Message text: &1 Material difference (&3) between &2 is not standard (&4)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message OQ_C251 - &1 Material difference (&3) between &2 is not standard (&4) ?

  The SAP error message OQ_C251 indicates that there is a material difference that is not standard between two specified materials. This error typically arises in the context of material management, particularly when dealing with material master data or during processes like inventory management, production planning, or procurement.
  Cause:
  The error message OQ_C251 can occur due to several reasons, including:
  
  
  Material Master Data Inconsistency: The materials being compared may have different configurations or settings in their material master records. This could include differences in valuation class, material type, or other key attributes.
  
  
  Non-Standard Material Types: The materials involved may not conform to the expected standard material types or categories defined in the system.
  
  
  Configuration Issues: There may be issues with the configuration settings in the SAP system that define how materials should be treated or compared.
  
  
  Data Entry Errors: Manual data entry errors during the creation or modification of material master records can lead to discrepancies.
  
  
  Solution:
  To resolve the OQ_C251 error, you can take the following steps:
  
  
  Check Material Master Records: Review the material master records for both materials involved in the error. Ensure that they have consistent settings, especially in terms of valuation class, material type, and other relevant fields.
  
  
  Standardize Material Types: If the materials are supposed to be of the same type, ensure that they are correctly classified. You may need to change the material type of one of the materials to match the other.
  
  
  Review Configuration Settings: Check the configuration settings in the SAP system related to material management. Ensure that the settings align with your business processes and that there are no discrepancies.
  
  
  Data Validation: Validate the data entered for both materials to ensure there are no typographical errors or incorrect entries.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the error message and its implications.
  
  
  Seek Help from SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like MM03 (Display Material), MM02 (Change Material), or MM01 (Create Material) to access and modify material master data.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  User Forums: Engage with 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 cause of the OQ_C251 error and implement a solution to resolve it.