How To Fix IS877 - Material number/serial number is not unique

IS877 - Overview

• Message type: E = Error

• Message class: IS - Equipment management

• Message number: 877

• Message text: Material number/serial number is not unique

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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IS877 - Details

• The SAP error message IS877, which states "Material number/serial number is not unique," typically occurs in scenarios where the system expects a unique combination of material number and serial number, but finds duplicates in the database. This can happen in various contexts, such as during goods movements, inventory management, or when processing sales orders.
  Causes:
  
  Duplicate Entries: The most common cause is that the same serial number has been assigned to multiple material numbers or has been entered multiple times for the same material.
  Incorrect Data Entry: Manual entry errors can lead to the same serial number being entered for different materials.
  Data Migration Issues: If data has been migrated from another system, there may be inconsistencies or duplicates in the serial number assignments.
  
  Configuration Issues: The system may not be configured correctly to handle serial numbers, leading to conflicts.
  
  Solutions:
  
  Check for Duplicates: Use transaction codes like IQ01 (Create Serial Number) or IQ02 (Change Serial Number)