How To Fix /CPD/CL_MSG378 - &1 cannot be a dropdown; missing fixed values and value table

/CPD/CL_MSG378 - Overview

• Message type: E = Error

• Message class: /CPD/CL_MSG -

• Message number: 378

• Message text: &1 cannot be a dropdown; missing fixed values and value table

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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/CPD/CL_MSG378 - Details

• The SAP error message /CPD/CL_MSG378 &1 cannot be a dropdown; missing fixed values and value table typically occurs in the context of SAP applications that utilize dropdown lists or selection fields. This error indicates that the system is unable to generate a dropdown list for a particular field because it lacks the necessary fixed values or a value table to populate the dropdown.
  
  Cause:
  
  
  Missing Fixed Values: The field in question is expected to have a predefined set of values (fixed values) that can be displayed in a dropdown. If these values are not defined in the system, the dropdown cannot be created.
  
  
  Missing Value Table: The system may also rely on a value table that contains the possible entries for the field. If this table is not defined or is not accessible, the dropdown cannot be populated.
  
  
  
  Configuration Issues: There may be issues in the configuration of the field in the relevant data