How To Fix BK185 - Document with external ref. cannot be reversed through internal number.

BK185 - Overview

• Message type: E = Error

• Message class: BK - Create, Display, Reverse Controlling Document

• Message number: 185

• Message text: Document with external ref. cannot be reversed through internal number.

What causes this issue?

You want to reverse a CO document which has an external reference. You
cannot reverse the external document within the Controlling component.
The reversal must run via the external document number.

System Response

The R/3 System does not reverse the document.

How to fix this error?

Reverse the document by way of the external reference, where possible
with a reference for the internal reversal as well.

Error message extract from SAP system. Copyright SAP SE.

BK185 - Details

• The SAP error message BK185 ("Document with external ref. cannot be reversed through internal number") typically occurs when you attempt to reverse a financial document that was created with an external reference number, but you are trying to do so using an internal document number. This situation can arise in various financial transactions, such as journal entries or invoices.
  
  Cause:
  
  External Reference Number: The document you are trying to reverse was created with an external reference number (e.g., a document number from an external system or a manually entered number).
  Internal Number Usage: The reversal process is being attempted using an internal document number, which is not allowed for documents created with an external reference.
  
  Configuration Issues: There may be configuration settings in the SAP system that restrict the reversal of documents based on how they were created.
  
  
  Solution:
  
  Use the Correct Document Number: To reverse the document, you need to use the external reference number