How To Fix MM_PUR_SES137 - External number assignment is not supported. Do not maintain an SES ID.

SAP Error Message - Details

• Message type: E = Error

• Message class: MM_PUR_SES -

• Message number: 137

• Message text: External number assignment is not supported. Do not maintain an SES ID.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MM_PUR_SES137 - External number assignment is not supported. Do not maintain an SES ID. ?

  The SAP error message MM_PUR_SES137 indicates that there is an issue with the external number assignment for Service Entry Sheets (SES). This error typically arises when the system is configured to use internal number assignment for SES, but an attempt is made to maintain or use an external number.
  Cause:
  
  Configuration Settings: The system is set up to use internal number assignment for Service Entry Sheets, but an external number is being provided or maintained.
  User Input: Users may be trying to manually enter a number for the SES, which is not allowed in the current configuration.
  Document Type Settings: The document type for the SES may be configured incorrectly, leading to this error.
  
  Solution:
  
  
  Check Number Range Configuration:
  
  Go to the transaction code SNRO (Number Range Objects).
  Look for the object related to Service Entry Sheets (usually EKKO or similar).
  Ensure that the number range is set to internal if you want the system to generate numbers automatically.
  
  
  
  Adjust Document Type Settings:
  
  Use transaction code OMH1 to check the settings for the document type used for Service Entry Sheets.
  Ensure that the document type is configured to use internal number assignment.
  
  
  
  Avoid Manual Entry:
  
  If the system is configured for internal number assignment, do not attempt to manually enter a number for the SES. Instead, let the system generate the number.
  
  
  
  Consult with SAP Basis or Configuration Team:
  
  If you are unsure about the configuration settings, consult with your SAP Basis or configuration team to ensure that the settings align with your business processes.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SNRO: To check and maintain number ranges.
  OMH1: To configure document types for purchasing documents.
  
  
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  
  
  Documentation: Review SAP documentation related to Service Entry Sheets and number assignment to understand the implications of internal vs. external number assignment.
  
  
  By following these steps, you should be able to resolve the MM_PUR_SES137 error and ensure that your Service Entry Sheets are processed correctly.