How To Fix 9J121 - Unit &2 cannot be converted to base unit for resource &1

9J121 - Overview

• Message type: E = Error

• Message class: 9J -

• Message number: 121

• Message text: Unit &2 cannot be converted to base unit for resource &1

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message 9J121 - Unit &2 cannot be converted to base unit for resource &1 ?

  The SAP error message 9J121 indicates that there is an issue with converting a unit of measure (UoM) for a resource in the system. Specifically, it states that the unit &2 cannot be converted to the base unit for resource &1. This typically occurs in the context of resource planning, production, or maintenance activities where units of measure are critical for accurate calculations and reporting.
  Causes:
  
  Missing Conversion Factors: The conversion factors between the unit of measure (UoM) used and the base unit of measure for the resource may not be defined in the system.
  Incorrect Unit of Measure: The unit of measure being used may not be valid for the resource in question.
  
  Configuration Issues: There may be configuration issues in the material master or resource master data that prevent the conversion from occurring.
  Data Inconsistencies: There could be inconsistencies in the data related to the resource or its associated units of measure.
  
  Solutions:
  
  
  Check Unit