How To Fix BM804 - An external unit of measurement must be defined here

BM804 - Overview

• Message type: E = Error

• Message class: BM - Development class BZME - units of measure

• Message number: 804

• Message text: An external unit of measurement must be defined here

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 BM804 - An external unit of measurement must be defined here ?

  The SAP error message BM804, which states "An external unit of measurement must be defined here," typically occurs in the context of material master data or when dealing with units of measurement in various SAP modules, such as MM (Materials Management) or SD (Sales and Distribution). This error indicates that the system expects an external unit of measurement to be defined for a particular material or process, but it is missing.
  
  Cause:
  
  Missing External Unit of Measurement: The most common cause of this error is that the external unit of measurement has not been defined for the material in question. This can happen if the material master data was not fully maintained or if the relevant configuration settings are incomplete.
  Incorrect Configuration: There may be issues with the configuration of units of measurement in the system, such as missing entries in the unit of measurement tables.
  Data Entry Errors: Sometimes, data entry errors during