How To Fix REXCJP400 - * Special Error Messages for Function Module

SAP Error Message - Details

• Message type: E = Error

• Message class: REXCJP - Localization Flexible Real Estate Japan

• Message number: 400

• Message text: * Special Error Messages for Function Module

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 REXCJP400 - * Special Error Messages for Function Module ?

  The SAP error message REXCJP400 is a special error message that typically indicates an issue related to the execution of a function module in the SAP system. This error can arise due to various reasons, and understanding the context in which it occurs is crucial for troubleshooting.
  Possible Causes:
  
  Data Issues: The input data provided to the function module may be incorrect or incomplete. This could include missing mandatory fields or invalid data formats.
  Authorization Problems: The user executing the function may not have the necessary authorizations to perform the action.
  Configuration Errors: There may be issues with the configuration settings related to the function module or the business process it is associated with.
  System Errors: There could be underlying system issues, such as memory problems or database inconsistencies.
  Custom Code: If the function module is part of a custom development, there may be bugs or logical errors in the code.
  
  Solutions:
  
  Check Input Data: Review the data being passed to the function module. Ensure that all required fields are filled out correctly and that the data types match the expected formats.
  Review Authorizations: Verify that the user has the necessary authorizations to execute the function module. This can be done by checking the user's roles and permissions.
  Configuration Review: Check the configuration settings related to the function module. Ensure that all necessary settings are correctly configured.
  Debugging: If you have access to the development environment, you can debug the function module to identify where the error occurs. This can help pinpoint the exact cause of the issue.
  Consult Documentation: Refer to SAP documentation or notes related to the specific function module for any known issues or additional troubleshooting steps.
  Contact SAP Support: If the issue persists and cannot be resolved internally, consider reaching out to SAP support for assistance.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may want to check transaction codes related to the function module or the business process it supports.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address known issues or provide patches.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  
  Conclusion:
  The REXCJP400 error message indicates a special error related to a function module in SAP. By systematically checking the input data, authorizations, configurations, and possibly debugging the function, you can identify and resolve the underlying issue. If necessary, do not hesitate to seek help from SAP support or community resources.