How To Fix BUP_ADDR101 - External address number &1 is not unique for every point in time

BUP_ADDR101 - Overview

• Message type: E = Error

• Message class: BUP_ADDR - BP: Message Class for Address Segment

• Message number: 101

• Message text: External address number &1 is not unique for every point in time

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 BUP_ADDR101 - External address number &1 is not unique for every point in time ?

  The SAP error message BUP_ADDR101 indicates that there is a problem with the uniqueness of an external address number in the Business Partner (BP) master data. Specifically, it means that the external address number specified is not unique for every point in time, which can lead to inconsistencies in the data.
  
  Cause:
  
  Duplicate External Address Numbers: The external address number you are trying to use is already assigned to another business partner or address in the system for the same time period.
  Incorrect Time Validity: The external address number may have been assigned to multiple records that overlap in their validity periods.
  Data Migration Issues: If data was migrated from another system, it’s possible that duplicates were introduced during the migration process.
  
  
  Solution:
  
  
  Check for Duplicates: 
  
  Use transaction codes like BP (Business Partner) or SE16N (Data Browser) to check the database table for existing entries with the same external address number.
  Look specifically in the BUT020 table,