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

EK851 - Overview

• 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

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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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EK851 - Details

• 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