How To Fix 1I183 - Transaction type &1 for posting category 86 needs unique GL operation

1I183 - Overview

• Message type: E = Error

• Message class: 1I - BCA: General Ledger Integration

• Message number: 183

• Message text: Transaction type &1 for posting category 86 needs unique GL operation

What causes this issue?

There is no unique assignment between the transaction type of the
payment transaction (loss of value adjustment for receivables, mostly
8080) for posting category 86 and the general ledger operation. An
incorrect assignment is, for example, as follows:
Transaction type,,Description of transaction type,,GL Operation,,General
ledger operation description
0150,,Bank transfer,,0001,,Payments
8080,,Loss on IVA receivable,,0001,,Payments
In the general ledger, the bank transfer would be interpreted as a loss
on IVA receivables.

How to fix this error?

For business purposes, there must be (loss on IVA receivables, mostly
8080) of posting category 86, there must be a unique relationship
between this transaction type and the general ledger operation for the
transaction type.
A correct assignment is, for example, as follows:
Transaction type,,Description transaction type,,GL Operation,,General
ledger operation description
0150,,Bank transfer,,0001,,Payments
8080,,Loss on IVA receivable,,8080,,Loss on IVA receivable

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 1I183 - Transaction type &1 for posting category 86 needs unique GL operation ?

  The SAP error message 1I183 indicates that there is an issue with the transaction type for posting category 86, which requires a unique General Ledger (GL) operation. This error typically arises in the context of financial postings, particularly when dealing with specific transaction types that are not properly configured or when there are conflicting entries.
  
  Cause:
  
  Duplicate GL Operations: The error usually occurs when there are multiple GL operations defined for the same transaction type, which is not allowed for posting category 86.
  
  Configuration Issues: The configuration settings in the Financial Accounting (FI) module may not be set up correctly, leading to conflicts in how transactions are processed.
  Transaction Type Settings: The transaction type being used may not be properly defined or may not have a unique GL account assigned to it.
  
  
  Solution:
  
  
  Check Configuration:
  
  Go to the configuration settings for the transaction types in the SAP system. You can do this by navigating to SPRO >