How To Fix 8H027 - Invalid posting key or spec.GL indicator or document was reversed

SAP Error Message - Details

• Message type: E = Error

• Message class: 8H - THRF: Thai retrofit 46C: Message class for Thai objects

• Message number: 027

• Message text: Invalid posting key or spec.GL indicator or document was reversed

What causes this issue?

To issue withholding tax certificate, the following characteristics are
required :-
- Not a reversed document
- For invoice, the posting key must not be used for payment.
- For payment, the posting key must be flaged for payment.
- For down payment or special G/L, the correct special G/L indicator
must be used.

System Response

No certificate issued or no numbering.

How to fix this error?

Check the customizing on posting key and create new document.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 8H027 - Invalid posting key or spec.GL indicator or document was reversed ?

  The SAP error message 8H027 indicates that there is an issue with the posting key or special general ledger (G/L) indicator when trying to post a document. This error can occur in various scenarios, such as during the posting of financial documents, adjustments, or reversals. Here’s a breakdown of the potential causes, solutions, and related information for this error:
  Causes:
  
  
  Invalid Posting Key: The posting key used in the transaction may not be valid for the type of transaction being processed. Each posting key is associated with specific types of transactions (e.g., debit or credit) and account types.
  
  
  Invalid Special G/L Indicator: If a special G/L indicator is used, it may not be valid for the account or transaction type. Special G/L indicators are used for specific types of transactions, such as down payments or guarantees.
  
  
  Document Reversal: If you are trying to reverse a document, the original document may not be in a