How To Fix FICO1026 - Error in input data for function module/method &1

SAP Error Message - Details

• Message type: E = Error

• Message class: FICO1 -

• Message number: 026

• Message text: Error in input data for function module/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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message FICO1026 - Error in input data for function module/method &1 ?

  The SAP error message FICO1026, which states "Error in input data for function module/method &1," typically occurs in the Financial Accounting (FI) or Controlling (CO) modules when there is an issue with the data being passed to a function module or method. This error can arise from various reasons, including incorrect data formats, missing required fields, or invalid values.
  Causes:
  
  Incorrect Data Format: The data being passed to the function module may not match the expected format (e.g., date formats, currency formats).
  Missing Required Fields: Some required fields may not be populated, leading to the function module being unable to process the request.
  Invalid Values: The values provided may not be valid according to the business logic or constraints defined in the system (e.g., invalid account numbers, cost centers, etc.).
  Configuration Issues: There may be configuration settings in the system that are not aligned with the data being processed.
  Authorization Issues: The user may not have the necessary authorizations to execute the function module or method.
  
  Solutions:
  
  Check Input Data: Review the data being passed to the function module. Ensure that all required fields are populated and that the data is in the correct format.
  Validate Values: Ensure that all values provided (e.g., account numbers, cost centers) are valid and exist in the system.
  Debugging: If you have access to the ABAP debugger, you can set breakpoints in the function module to see what data is being passed and where it might be failing.
  Review Configuration: Check the configuration settings related to the function module or method being called. Ensure that they are set up correctly.
  Consult Documentation: Refer to SAP documentation or notes related to the specific function module or method to understand the expected input parameters and any constraints.
  User Authorizations: Verify that the user executing the transaction has the necessary authorizations to perform the action.
  
  Related Information:
  
  Transaction Codes: Depending on where the error occurs, you may want to check specific transaction codes related to FI/CO processes (e.g., FB01 for document posting, KSB1 for cost center reports).
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address known issues or provide additional guidance on the error.
  Community Forums: Check SAP Community forums or other user groups for similar issues and solutions shared by other users.
  
  If the issue persists after checking the above points, it may be beneficial to involve your SAP Basis or ABAP development team for further investigation.