How To Fix BK192 - The external number is not unique, enter an internal number

BK192 - Overview

• Message type: E = Error

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

• Message number: 192

• Message text: The external number is not unique, enter an internal number

What causes this issue?

You entered an external number for document selection. This number is
not a unique entry.

How to fix this error?

Enter the Controlling document number and the controlling area.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BK192 - The external number is not unique, enter an internal number ?

  The SAP error message BK192, which states "The external number is not unique, enter an internal number," typically occurs in the context of financial transactions, particularly when dealing with document numbers in the SAP system. This error indicates that the system has detected a duplicate external document number that is not unique within the specified range.
  
  Cause:
  
  Duplicate External Number: The external document number you are trying to enter already exists in the system. SAP requires that external document numbers be unique to avoid confusion and ensure data integrity.
  Configuration Settings: The system may be configured to require unique external numbers for certain document types, and if the number you are trying to use has already been assigned, the system will reject it.
  Data Entry Error: There may have been a mistake in data entry, leading to the use of a number that has already been recorded.
  
  
  Solution:
  
  Use an Internal Number: If the system allows,