How To Fix CNV_MBT896 - Interface doesn¦t match to the checking rule interface.

CNV_MBT896 - Overview

• Message type: E = Error

• Message class: CNV_MBT - PCL message class

• Message number: 896

• Message text: Interface doesn¦t match to the checking rule interface.

What causes this issue?

The interface of a function module used for a checking rule does not
match to the interface that we have to implement for a checking rule
function module.

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

The function module interface has to fullfil the following declaration:
Importparameter: ,,
1. Parameter:
parameter name: ,,IP_PACKID,,,,
parameter type: ,,I
structure: ,,,,,,CNV_MBT_PACKID
2. Parameter:
parameter name: ,,IP_VARIANT
parameter type: ,,I,,,,,,
structure: ,,,,,,CNV_MBT_CR_VARIANT
Exportparameter:,,
1. Parameter
parameter name: ,,RETURN_CODE,,
parameter type: ,,E,,,,,,
structure: ,,,,SY-SUBRC
Tables:,,,,
1. Parameter
parameter name: ,,RETURN_TABLE,,
parameter type:,,T,,,,,,
structure: ,,,,BAPIRET2

System Response

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

CNV_MBT896 - Details

• The SAP error message CNV_MBT896 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there is a mismatch between the interface being used and the expected checking rule interface.
  
  Cause:
  
  Interface Mismatch: The error suggests that the data being processed does not conform to the expected structure or format defined by the checking rules for the specific interface.
  
  Configuration Issues: There may be configuration issues in the migration project or the data mapping that lead to this mismatch.
  Data Quality Issues: The data being migrated may contain inconsistencies or errors that prevent it from being validated against the checking rules.
  Version Compatibility: If there are changes in the version of the migration tool or the source system, it may lead to incompatibility with the defined interfaces.
  
  
  Solution:
  
  Check Interface Configuration: Review the configuration of the migration project to ensure that the correct interface