How To Fix FDT_EXPRESSIONS004 - Invalid boolean value &1; only X (true) and space (false) allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_EXPRESSIONS - Formula & Derivation Tool: Expressions

• Message number: 004

• Message text: Invalid boolean value &1; only X (true) and space (false) 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_EXPRESSIONS004 - Invalid boolean value &1; only X (true) and space (false) allowed ?

  The SAP error message FDT_EXPRESSIONS004 indicates that there is an invalid boolean value being used in a context where only specific values are allowed. In SAP, boolean values are typically represented as 'X' for true and a space (' ') for false. This error occurs when a value other than these two is provided.
  Cause:
  The error is triggered when:
  
  A field or variable that is expected to hold a boolean value contains an invalid entry (e.g., 'Y', 'N', '1', '0', or any other character).
  There is a misconfiguration in the data being processed, such as incorrect mappings or data types.
  A custom expression or formula is incorrectly defined, leading to the use of an invalid boolean value.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check the Input Values: Review the values being passed to the boolean field. Ensure that only 'X' (for true) or a space (for false) is being used.
  
  
  Review Expressions and Logic: If you are using expressions or formulas, verify that they are correctly defined and that they return valid boolean values.
  
  
  Data Mapping: If the error arises from data mapping (e.g., in a data transformation or migration process), ensure that the source data is correctly mapped to the expected boolean values.
  
  
  Debugging: If you are working with custom code or expressions, use debugging tools to trace the values being processed and identify where the invalid value is being introduced.
  
  
  Documentation and Standards: Refer to SAP documentation or guidelines regarding the expected formats for boolean values in the specific context you are working with.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and what solutions they found.
  Testing: After making changes, conduct thorough testing to ensure that the issue is resolved and that no new issues are introduced.
  
  By following these steps, you should be able to identify the source of the invalid boolean value and correct it to eliminate the error message.