How To Fix CNV_10020663 - &1 &2: Specific form &3 has wrong interface

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 663

• Message text: &1 &2: Specific form &3 has wrong interface

What causes this issue?

Specific routine &V3& has been stored for &V1& &V2&. However the
interface is not defined correctly.

How to fix this error?

Correct the interface definition of routine &V3&. <ZH>Note that it must
be EXACTLY the same as for sample routine &V4&</>, because internally
the call is explicitly included in the coding.
<ZH>Note:</> The program for checking the interface definition compares
the definition for routine &V3& with the one for sample routine &V4&.
This is also why the interface parameters have to have exactly the same
names. Even the formatting must be identical.
The best solution is to copy sample routine &V4& to the routine you want
to use.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020663 - &1 &2: Specific form &3 has wrong interface ?

  The SAP error message CNV_10020663 typically indicates that there is an issue with the interface of a specific form in the SAP system. This error is often encountered during data migration or conversion processes, particularly when using SAP's Conversion Tools or during the execution of specific programs that involve forms.
  Cause:
  
  Incorrect Form Interface: The form specified in the error message does not match the expected interface. This could be due to changes in the form definition or the underlying data structure.
  Version Mismatch: The form may have been created or modified in a different version of SAP, leading to compatibility issues.
  Missing or Incomplete Data: The data being processed may not meet the requirements of the form, leading to interface mismatches.
  Custom Modifications: If the form has been customized, it may not adhere to the standard interface expected by the system.
  
  Solution:
  
  Check Form Definition: Review the form definition in the SAP system to ensure that it matches the expected interface. You can do this by using transaction codes like SMARTFORMS or SE71 (for SAPscript).
  Validate Data: Ensure that the data being passed to the form is complete and adheres to the expected structure. Check for any missing fields or incorrect data types.
  Recreate or Adjust the Form: If the form has been modified, consider reverting to a standard version or adjusting the customizations to align with the expected interface.
  Consult Documentation: Refer to SAP documentation or notes related to the specific form and its interface requirements. This can provide insights into any known issues or required adjustments.
  Debugging: If you have access to debugging tools, you can trace the execution of the program to identify where the interface mismatch occurs.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error message or provide guidance on similar issues.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered and resolved similar issues.
  Transaction Codes: Familiarize yourself with transaction codes related to form management (e.g., SMARTFORMS, SE71, SE78) for troubleshooting and adjustments.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance, providing them with detailed information about the error and the context in which it occurs.