How To Fix IM433 - Number range does not allow external number assignment

SAP Error Message - Details

• Message type: E = Error

• Message class: IM - Maintenance notifications

• Message number: 433

• Message text: Number range does not allow external number assignment

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message IM433 - Number range does not allow external number assignment ?

  The SAP error message IM433 ("Number range does not allow external number assignment") typically occurs when you are trying to create or assign a number to an object (like a material document, invoice, etc.) using an external number range, but the configuration of the number range does not permit external assignments.
  
  Cause:
  
  Number Range Configuration: The number range for the object you are trying to create is set to "Internal" only, meaning that it does not allow external number assignments.
  Incorrect Number Range Assignment: The document type or object you are working with may be incorrectly configured to use an internal number range when you are trying to assign an external number.
  User Authorization: In some cases, the user may not have the necessary authorizations to use external number ranges.
  
  
  Solution:
  
  
  Check Number Range Configuration:
  
  Go to the transaction code SNRO (Number Range Objects).
  Find the relevant number range object for the document type you are working with.
  Check