How To Fix 8N1302 - There must be exactly one line item with posting key 50. The bank account

SAP Error Message - Details

• Message type: E = Error

• Message class: 8N1 - Messages for Accounting (Greek Localization)

• Message number: 302

• Message text: There must be exactly one line item with posting key 50. The bank account

Self-Explanatory Message

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• What is the cause and solution for SAP error message 8N1302 - There must be exactly one line item with posting key 50. The bank account ?

  The SAP error message 8N1302 indicates that there is an issue with the line items in a financial document, specifically related to the bank account posting. The error states: "There must be exactly one line item with posting key 50." This typically occurs during the posting of a financial transaction, such as a payment or a bank reconciliation.
  Cause:
  
  Incorrect Number of Line Items: The error arises when the system expects exactly one line item with posting key 50 (which is usually associated with bank account debits) but finds either none or more than one.
  Configuration Issues: There may be configuration settings in the financial document type or posting rules that are not aligned with the expected behavior.
  Data Entry Errors: Users may have inadvertently entered multiple line items with posting key 50 or omitted it entirely.
  
  Solution:
  
  
  Check Line Items: Review the line items in the document you are trying to post. Ensure that there is exactly one line item with posting key 50.
  
  If there are multiple line items with posting key 50, remove the excess entries.
  If there are no line items with posting key 50, add one that correctly reflects the bank account transaction.
  
  
  
  Review Document Type Configuration: If the issue persists, check the configuration of the document type being used for the transaction. Ensure that the rules for posting keys are correctly set up to allow for one and only one line item with posting key 50.
  
  
  Consult with Finance Team: If you are unsure about the correct entries or configurations, consult with your finance or accounting team to ensure that the entries align with accounting principles and practices.
  
  
  Test in a Sandbox Environment: If you are making configuration changes, it is advisable to test them in a sandbox environment before applying them to the production system.
  
  
  Related Information:
  
  Posting Key 50: This posting key is typically used for debiting a bank account. Understanding the role of posting keys in SAP can help in troubleshooting similar issues.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as FB50 (General Ledger Account Document Entry) or F-02 (General Posting) to analyze and correct the entries.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message, as there may be updates or fixes provided by SAP.
  
  By following these steps, you should be able to resolve the error message 8N1302 and successfully post your financial transaction.