How To Fix /ACCGO/UIS_API138 - Duplicate EXTID &1 in header data

/ACCGO/UIS_API138 - Overview

• Message type: E = Error

• Message class: /ACCGO/UIS_API -

• Message number: 138

• Message text: Duplicate EXTID &1 in header data

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

/ACCGO/UIS_API138 - Details

• The SAP error message /ACCGO/UIS_API138 Duplicate EXTID &1 in header data typically indicates that there is a duplicate external ID (EXTID) in the header data of a document or transaction you are trying to process. This error is common in scenarios where unique identifiers are required, such as in financial documents, accounting entries, or integration processes.
  
  Cause:
  
  Duplicate Entry: The most common cause is that the external ID you are trying to use has already been assigned to another document or entry in the system.
  Data Migration Issues: If you are migrating data from another system or performing bulk uploads, there may be duplicates in the source data.
  Integration Issues: If you are integrating with other systems, there may be conflicts in the external IDs being used.
  
  
  Solution:
  
  
  Check for Duplicates: 
  
  Review the entries in the relevant table or document type to identify if the EXTID already exists. You can use transaction codes like SE16 or