How To Fix FDT_EXPRESSIONS101 - Internal error: Invalid call of method &1

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 101

• Message text: Internal error: Invalid call of method &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 FDT_EXPRESSIONS101 - Internal error: Invalid call of method &1 ?

  The SAP error message FDT_EXPRESSIONS101 with the description "Internal error: Invalid call of method &1" typically indicates that there is an issue with the way a method is being called within the context of the SAP FDT (Form Data Tool) framework. This error can arise due to various reasons, including incorrect configurations, issues in the underlying code, or problems with the data being processed.
  Possible Causes:
  
  Incorrect Method Call: The method being called may not be valid in the current context or may not exist.
  Data Issues: The data being processed may not meet the expected format or requirements, leading to an invalid method call.
  Configuration Errors: There may be misconfigurations in the FDT settings or related components.
  Version Compatibility: The error could arise from using incompatible versions of SAP components or FDT.
  Custom Code Issues: If there are custom developments or enhancements, they may be causing the error due to incorrect implementation.
  
  Solutions:
  
  Check Method Validity: Verify that the method being called is valid and exists in the context where it is being invoked. Review the method name and parameters.
  Review Data: Ensure that the data being processed is valid and conforms to the expected structure. Check for null values or incorrect data types.
  Configuration Review: Go through the FDT configurations to ensure that everything is set up correctly. Look for any discrepancies or missing configurations.
  Debugging: Use debugging tools to trace the execution flow and identify where the error occurs. This can help pinpoint the exact cause of the invalid method call.
  Check for Updates: Ensure that your SAP system is up to date with the latest patches and updates, as this may resolve known issues.
  Consult Documentation: Refer to SAP documentation or notes related to FDT and the specific method being called for any known issues or additional guidance.
  Contact SAP Support: If the issue persists and cannot be resolved through the above steps, consider reaching out to SAP support for assistance. Provide them with detailed information about the error, including the context in which it occurs.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to FDT and the specific error message. SAP Notes often provide solutions or workarounds for common problems.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed. Other users may have encountered the same error and can offer insights.
  Documentation: Review the official SAP documentation for FDT to understand the expected behavior and configurations.
  
  By following these steps, you should be able to diagnose and resolve the FDT_EXPRESSIONS101 error in your SAP environment.