How To Fix FIN_UI_DECO_IL_GEN001 - Change of posting key from &1 to &2 is not allowed

FIN_UI_DECO_IL_GEN001 - Overview

• Message type: E = Error

• Message class: FIN_UI_DECO_IL_GEN - Frontend Backend Decoupling - IL generic

• Message number: 001

• Message text: Change of posting key from &1 to &2 is not allowed

What causes this issue?

You tried to change the posting key from &V1& to &V2&. For G/L account
postings, you are only allowed to change the posting key from &V3& to
&V4& (or the reverse).

System Response

The posting key change is not processed.

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FIN_UI_DECO_IL_GEN001 - Change of posting key from &1 to &2 is not allowed ?

  The SAP error message FIN_UI_DECO_IL_GEN001 indicates that there is an attempt to change the posting key from one value to another, which is not permitted in the current context. This error typically arises in financial transactions where specific posting keys are associated with certain types of entries, and changing them could violate business rules or system configurations.
  
  Cause:
  
  Posting Key Restrictions: Each posting key in SAP is configured to allow or disallow certain types of transactions. For example, some posting keys are designated for debit entries, while others are for credit entries. Changing from one to another may not be allowed based on the configuration.
  Transaction Type: The transaction you are trying to perform may not support the change of posting keys due to the nature of the financial document being processed.
  Configuration Settings: The system configuration may have specific rules that prevent changing posting keys for certain document types or in certain scenarios.
  
  
  Solution:
  
  Review