How To Fix WS673 - Posting string &1 is not permitted; use only 'RE23' or 'RE28'

SAP Error Message - Details

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 673

• Message text: Posting string &1 is not permitted; use only 'RE23' or 'RE28'

Self-Explanatory Message

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• What is the cause and solution for SAP error message WS673 - Posting string &1 is not permitted; use only 'RE23' or 'RE28' ?

  SAP Error Message:
  
  WS673 Posting string &1 is not permitted; use only 'RE23' or 'RE28'
  
  Cause:
  This error occurs when you try to post a document or perform an action in SAP using a posting string (also called posting key or posting indicator) that is not allowed in the current context. The system expects only specific posting strings, in this case, 'RE23' or 'RE28', but a different or invalid posting string was entered or derived.
  
  Posting strings like RE23 and RE28 are typically related to specific transaction types or document types in SAP, often in the context of invoice verification, logistics invoice verification, or material document postings.
  The error indicates that the posting string you used is not valid for the operation you are trying to perform.
  This can happen due to:
  
  Incorrect configuration of posting keys or document types.
  Customization or user input error.
  Using a wrong transaction or process step that expects only certain posting strings.
  
  
  
  
  Solution:
  
  
  Check the Posting String Used:
  
  Identify the posting string you are trying to use (the value of &1 in the error message).
  Confirm if it is one of the allowed posting strings (RE23 or RE28).
  
  
  
  Use Allowed Posting Strings:
  
  Modify your input or configuration to use only RE23 or RE28 as the posting string.
  These posting strings are usually predefined for certain invoice or goods receipt postings.
  
  
  
  Review Configuration:
  
  Go to SPRO ? Materials Management ? Logistics Invoice Verification ? Incoming Invoice ? Maintain Posting Strings.
  Verify that the posting strings are correctly maintained and assigned to the relevant document types or transaction types.
  
  
  
  Check Transaction or Process:
  
  Ensure you are using the correct transaction or process step that supports these posting strings.
  For example, if you are posting an invoice, use the standard invoice posting transactions like MIRO or MRBR.
  
  
  
  Consult SAP Notes or Documentation:
  
  Sometimes, this error is related to specific SAP Notes or patches. Check SAP Support Portal for notes related to WS673.
  
  
  
  
  Related Information:
  
  
  Posting Strings (Posting Keys):
  
  Posting strings like RE23 and RE28 are often related to invoice verification and logistics invoice verification processes. They define how the system posts accounting entries for invoices and credit memos.
  
  
  Common Transactions:
  
  MIRO - Enter Incoming Invoice
  MRBR - Release Blocked Invoices
  MIR7 - Park Invoice Document
  
  
  
  SAP Modules Involved:
  
  MM (Materials Management)
  FI (Financial Accounting)
  Logistics Invoice Verification
  
  
  
  Typical Scenario:
  
  When posting an invoice or credit memo, the system expects a posting string that corresponds to the document type and posting rules.
  Using an incorrect posting string can cause the system to reject the posting.
  
  
  
  
  Summary:
  The error WS673 Posting string &1 is not permitted; use only 'RE23' or 'RE28' means you are trying to post with an invalid posting string. To fix it, ensure you use only the allowed posting strings RE23 or RE28 by correcting your input or configuration in the invoice verification process.
  
  If you provide more context (transaction code, process step, or customizations), I can help you with more specific guidance.