How To Fix M8121 - You have no authorization to make a posting to this G/L account

SAP Error Message - Details

• Message type: E = Error

• Message class: M8 - Invoice Verification/Valuation

• Message number: 121

• Message text: You have no authorization to make a posting to this G/L account

What causes this issue?

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Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M8121 - You have no authorization to make a posting to this G/L account ?

  The SAP error message M8121, which states "You have no authorization to make a posting to this G/L account," typically indicates that the user attempting to post a transaction does not have the necessary authorization to post to the specified General Ledger (G/L) account. This can occur in various SAP modules, including Financial Accounting (FI) and Controlling (CO).
  Cause:
  
  Authorization Issues: The user lacks the required authorization object for the G/L account in question. This could be due to missing roles or authorizations assigned to the user profile.
  Account Restrictions: The G/L account may have been set up with specific restrictions that limit who can post to it. For example, it might be restricted to certain user groups or company codes.
  Posting Period: The posting period may be closed, preventing any postings to the G/L account.
  Document Type Restrictions: The document type being used for the posting may not be allowed for the G/L account.
  
  Solution:
  
  
  Check User Authorizations:
  
  Use transaction code SU53 immediately after receiving the error to check the authorization failure. This will show which authorization object is missing.
  Consult with your SAP security team to review and adjust the user's roles and authorizations as necessary.
  
  
  
  Review G/L Account Settings:
  
  Check the configuration of the G/L account in transaction code FS00. Ensure that there are no restrictions on the account that would prevent the user from posting.
  Verify if the account is set to allow postings from the relevant company code and user group.
  
  
  
  Check Posting Period:
  
  Ensure that the posting period is open. You can check this in transaction code OB52. If the period is closed, you may need to open it or post in an open period.
  
  
  
  Document Type Configuration:
  
  Review the document type settings in transaction code OBA7 to ensure that the document type being used allows postings to the specified G/L account.
  
  
  
  Consult with SAP Support: If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  
  Related Information:
  
  Authorization Objects: Common authorization objects related to G/L account postings include S_KA_010 (Authorization for G/L Account) and S_TCODE (Transaction Code Authorization).
  Transaction Codes:
  
  SU53: Display Authorization Check
  FS00: G/L Account Master Record
  OB52: Change View "Posting Periods": Overview
  OBA7: Document Types
  
  
  
  By following these steps, you should be able to identify and resolve the issue related to the M8121 error message in SAP.