How To Fix AD801 - Error in parameter passing to dialog module

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 801

• Message text: Error in parameter passing to dialog module

What causes this issue?

A program error has occurred. Dialog module SAPMSD12 was called with
an incorrect parameter.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Contact your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD801 - Error in parameter passing to dialog module ?

  The SAP error message AD801, which states "Error in parameter passing to dialog module," typically occurs when there is an issue with the parameters being passed to a dialog module in an SAP system. This can happen for various reasons, including incorrect data types, missing parameters, or issues with the function module being called.
  Causes of AD801 Error
  
  
  Incorrect Parameter Types: The parameters being passed to the dialog module may not match the expected data types. For example, if a string is expected but an integer is passed, this can lead to an error.
  
  
  Missing Parameters: If required parameters are not provided when calling the dialog module, it can result in this error.
  
  
  Function Module Issues: The dialog module or function module being called may have issues, such as being incorrectly defined or having bugs.
  
  
  Data Consistency Issues: If the data being passed is inconsistent or violates any constraints, it can lead to this error.
  
  
  Authorization Issues: Sometimes, authorization problems can prevent the proper execution of a dialog module, leading to parameter passing errors.
  
  
  Solutions to AD801 Error
  
  
  Check Parameter Definitions: Review the parameter definitions in the dialog module or function module to ensure that the data types and expected values match what is being passed.
  
  
  Debugging: Use the SAP debugger to step through the code and identify where the parameters are being passed incorrectly. This can help pinpoint the exact cause of the error.
  
  
  Review Function Module: If the error is related to a specific function module, check its implementation for any issues. Ensure that it is correctly defined and that all required parameters are being passed.
  
  
  Check for Missing Parameters: Ensure that all required parameters are being provided when calling the dialog module. Refer to the documentation for the module to confirm which parameters are necessary.
  
  
  Data Validation: Validate the data being passed to ensure it meets the expected format and constraints. This includes checking for null values, data types, and any business logic that may apply.
  
  
  Authorization Checks: Ensure that the user has the necessary authorizations to execute the dialog module. If there are authorization issues, they may need to be resolved by an administrator.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates available that resolve known issues.
  
  
  Related Information
  
  Transaction Codes: You can use transaction codes like SE37 (Function Module) or SE80 (Object Navigator) to investigate the function modules and dialog modules involved.
  SAP Community: Engaging with the SAP Community forums can provide insights from other users who may have encountered similar issues.
  Documentation: Refer to the official SAP documentation for the specific modules or functions you are working with to understand their expected behavior and parameter requirements.
  
  By following these steps, you should be able to identify and resolve the cause of the AD801 error in your SAP system.