How To Fix T1159 - Internal number assignment necessary for underlying transaction number

T1159 - Overview

• Message type: E = Error

• Message class: T1 - Financial instruments

• Message number: 159

• Message text: Internal number assignment necessary for underlying transaction number

What causes this issue?

During customizing, the underlying was allocated a number range
which specifies external number assignment.

How to fix this error?

Contact your customizing administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message T1159 - Internal number assignment necessary for underlying transaction number ?

  The SAP error message T1159, which states "Internal number assignment necessary for underlying transaction number," typically occurs when there is an issue with the number assignment for a transaction in the SAP system. This error can arise in various contexts, such as when creating documents, posting transactions, or during other processes that require unique identifiers.
  
  Cause:
  
  Missing Number Ranges: The most common cause of this error is that the number range for the specific transaction type has not been defined or is not properly configured.
  Number Range Intervals: The number range intervals may be exhausted, meaning that all available numbers have been used up.
  
  Configuration Issues: There may be issues in the configuration settings related to number assignment for the specific transaction.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to access or create the required number range.
  
  
  Solution:
  
  
  Check Number Range Configuration:
  
  Go to the transaction code SNRO (Number Range Objects).
  Find the relevant number