How To Fix 8X1026 - The number you have selected has already been given to another document

8X1026 - Overview

• Message type: E = Error

• Message class: 8X1 - Messages for Logistics (Greek Localization)

• Message number: 026

• Message text: The number you have selected has already been given to another document

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 8X1026 - The number you have selected has already been given to another document ?

  The SAP error message 8X1026, which states "The number you have selected has already been given to another document," typically occurs when there is an attempt to use a document number that is already assigned to another document in the system. This can happen in various modules, such as Finance (FI), Sales and Distribution (SD), or Materials Management (MM), where document numbers are unique identifiers.
  Causes:
  
  Duplicate Document Number: The most common cause is that the document number you are trying to use is already assigned to another document in the system.
  Number Range Overlap: If the number ranges for different document types overlap, it can lead to conflicts.
  Manual Entry Error: Users may inadvertently enter a document number that has already been used.
  System Configuration: Incorrect configuration of number ranges in the SAP system can lead to this error.
  Document Type Misconfiguration: If the document type is not set up correctly, it may lead to