How To Fix 88266 - Error &1 during external number check; key must be corrected

88266 - Overview

• Message type: E = Error

• Message class: 88 - REA Processing

• Message number: 266

• Message text: Error &1 during external number check; key must be corrected

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message 88266 - Error &1 during external number check; key must be corrected ?

  The SAP error message 88266, which states "Error &1 during external number check; key must be corrected," typically occurs when there is an issue with the external number assignment for a document or object in SAP. This error is often related to the configuration of number ranges or the way external numbers are being handled in the system.
  
  Cause:
  
  Invalid Number Range: The external number being used does not fall within the defined number range for the object type.
  Number Range Configuration: The number range may not be properly configured or may have been changed, leading to inconsistencies.
  Duplicate Numbers: The external number being used may already exist in the system, causing a conflict.
  Authorization Issues: The user may not have the necessary authorizations to use the specified number range.
  
  
  Solution:
  
  
  Check Number Range Configuration:
  
  Go to the transaction code SNRO (Number Range Objects) and check the configuration for the relevant number range object.
  Ensure that the number range