EK851 - Allocation for int. main transaction & and subtransaction & not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: EK - IS-U Accounts Receivable and Payable

• Message number: 851

• Message text: Allocation for int. main transaction & and subtransaction & not possible

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message EK851 - Allocation for int. main transaction & and subtransaction & not possible ?

  The SAP error message EK851 indicates that there is an issue with the allocation of costs or revenues in the context of internal transactions. This error typically arises when the system is unable to allocate costs for a specific main transaction and subtransaction combination. Here’s a breakdown of the potential causes, solutions, and related information for this error:
  Causes:
  
  
  Missing Configuration: The main transaction and subtransaction combination may not be properly configured in the system. This could be due to missing entries in the relevant customizing tables.
  
  
  Incorrect Master Data: The master data for the cost centers, internal orders, or other relevant objects may not be set up correctly, leading to allocation issues.
  
  
  Allocation Rules: The allocation rules defined in the system may not allow for the specific combination of main and subtransactions being used.
  
  
  Posting Period Issues: The posting period may be closed, preventing any allocations from being processed.
  
  
  Authorization Issues: The user may not have the necessary authorizations to perform the allocation for the specified transactions.
  
  
  Solutions:
  
  
  Check Configuration: Review the configuration settings for the main transaction and subtransaction in the relevant customizing areas (e.g., transaction codes OKEQ, OKB9, etc.). Ensure that the combination is valid and properly set up.
  
  
  Review Master Data: Verify that all relevant master data (cost centers, internal orders, etc.) is correctly maintained and that there are no inconsistencies.
  
  
  Adjust Allocation Rules: If necessary, modify the allocation rules to include the required main and subtransaction combinations.
  
  
  Open Posting Period: Ensure that the posting period is open for the transactions you are trying to allocate. You can check this in transaction code OB52.
  
  
  Check Authorizations: Confirm that the user has the necessary authorizations to perform the allocation. This can be checked in transaction SU53 or by consulting with your security team.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific error message for additional insights or updates that may address the issue.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as OKEQ (Define Allocation Structure), OKB9 (Define Allocation Rules), and OB52 (Open and Close Posting Periods).
  SAP Notes: Search for SAP Notes related to error EK851 in the SAP Support Portal for any known issues or patches that may resolve the problem.
  Community Forums: Consider checking SAP Community forums or other user groups for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to identify the root cause of the EK851 error and implement a suitable solution. If the problem persists, it may be beneficial to engage with your SAP support team for further assistance.