How To Fix /SAPAPO/MAT831 - Only one unit of measure category can be set to A or B

/SAPAPO/MAT831 - Overview

• Message type: E = Error

• Message class: /SAPAPO/MAT -

• Message number: 831

• Message text: Only one unit of measure category can be set to A or B

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 /SAPAPO/MAT831 - Only one unit of measure category can be set to A or B ?

  The SAP error message /SAPAPO/MAT831 indicates that there is an issue with the unit of measure (UoM) configuration for a material in the Advanced Planning and Optimization (APO) module. Specifically, it states that only one unit of measure category can be set to "A" (base unit of measure) or "B" (alternative unit of measure) for a given material.
  
  Cause:
  This error typically arises when:
  
  Multiple UoM Categories: You have defined multiple units of measure for a material, and more than one of them is incorrectly set to category "A" or "B".
  Configuration Error: There may be a configuration error in the material master data where the unit of measure categories are not set up correctly.
  Data Inconsistency: There could be inconsistencies in the data between the material master in SAP ERP and the APO system.
  
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Material Master Data:
  
  Go to the material master data in the SAP GUI