How To Fix FDT_WD_EXPRESSION074 - Only constant expression with element type &1 is allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_WD_EXPRESSION -

• Message number: 074

• Message text: Only constant expression with element type &1 is allowed

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 FDT_WD_EXPRESSION074 - Only constant expression with element type &1 is allowed ?

  The SAP error message FDT_WD_EXPRESSION074 indicates that there is an issue with the expression used in a field or a formula within the SAP system, specifically in the context of the Field Data Tool (FDT) or similar environments. The error message states that only constant expressions of a specific element type are allowed, and it typically arises when the expression does not conform to the expected format or type.
  Cause:
  
  Invalid Expression: The expression you are trying to use may not be a constant expression. For example, it might be referencing a variable or a field that is not allowed in that context.
  Type Mismatch: The element type specified in the error message does not match the type of the expression you are trying to use. For instance, if the expression is expected to be a string but is provided as a number, this error can occur.
  Contextual Restrictions: Certain contexts or components in SAP may have restrictions on the types of expressions that can be used. If you are trying to use a dynamic expression where a constant is required, this error will be triggered.
  
  Solution:
  
  Check the Expression: Review the expression you are using and ensure that it is a constant expression. If it references any variables or fields, consider changing it to a constant value.
  Verify Element Type: Ensure that the expression matches the expected element type. If the error message specifies a certain type (e.g., string, integer), make sure your expression conforms to that type.
  Consult Documentation: Refer to the SAP documentation or help resources for the specific component you are working with to understand the allowed expressions and types in that context.
  Debugging: If you are unsure about the expression, try simplifying it or breaking it down into smaller parts to identify where the issue lies.
  Testing: After making changes, test the expression in the relevant context to ensure that it no longer triggers the error.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context or solutions.
  Community Forums: Engage with SAP community forums or support channels where other users may have encountered and resolved similar issues.
  Field Data Tool (FDT): Familiarize yourself with the capabilities and limitations of the Field Data Tool, as it may have specific requirements for expressions and data types.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.