How To Fix EK104 - Key for transaction determination not valid

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 104

• Message text: Key for transaction determination not valid

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message EK104 - Key for transaction determination not valid ?

  The SAP error message EK104 ("Key for transaction determination not valid") typically occurs in the context of purchasing documents, such as purchase orders or purchase requisitions, when the system is unable to determine the appropriate transaction type for a given operation. This can happen due to various reasons related to configuration or data inconsistencies.
  Causes of EK104 Error
  
  
  Missing Configuration: The transaction determination settings in the system may not be properly configured. This includes missing entries in the relevant customizing tables.
  
  
  Incorrect Transaction Key: The transaction key being used may not exist in the system or may not be valid for the specific document type or purchasing organization.
  
  
  Data Inconsistencies: There may be inconsistencies in the master data, such as vendor or material master records, that prevent the system from determining the correct transaction.
  
  
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to access certain transaction types, leading to this error.
  
  
  Custom Development: If there are custom developments or enhancements in the system, they may interfere with the standard transaction determination process.
  
  
  Solutions to EK104 Error
  
  
  Check Configuration:
  
  Go to the SPRO transaction and navigate to the relevant configuration settings for purchasing.
  Ensure that the transaction determination settings are correctly defined for the relevant document types and purchasing organizations.
  
  
  
  Verify Transaction Key:
  
  Check the transaction key being used in the document. Ensure that it is valid and exists in the system.
  You can use transaction codes like SE11 or SE16 to view the relevant tables (e.g., T161, T161T) to confirm the existence of the transaction key.
  
  
  
  Review Master Data:
  
  Check the vendor and material master records for any inconsistencies or missing information that could affect transaction determination.
  Ensure that the relevant data is maintained correctly.
  
  
  
  Check Authorizations:
  
  Verify that the user has the necessary authorizations to perform the transaction. This can be done by checking the user roles and authorizations in transaction SU01.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the transaction to identify where the determination process is failing. This may require the assistance of a technical consultant.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message or provide additional guidance.
  
  
  
  Related Information
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as ME21N (Create Purchase Order), ME22N (Change Purchase Order), and ME23N (Display Purchase Order) to test and replicate the issue.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Documentation: Review SAP documentation related to purchasing and transaction determination for a deeper understanding of the configuration and processes involved.
  
  By following these steps, you should be able to identify the root cause of the EK104 error and implement the necessary solutions to resolve it.