How To Fix CNV_CMIS_A_20_FUNC300 - System exception ASSIGN_CASTING_ILLEGAL_CAST has occurred for table &1

CNV_CMIS_A_20_FUNC300 - Overview

• Message type: E = Error

• Message class: CNV_CMIS_A_20_FUNC - Message texts for CNV_CMIS_A_20 function modules

• Message number: 300

• Message text: System exception ASSIGN_CASTING_ILLEGAL_CAST has occurred for table &1

What causes this issue?

The system is trying to read data from a table whose fields contain
data types that cannot be converted to the character format (for
example, floating point (FLTP) fields). This error has occurred because
the current version of the function module CNV_CMIS_A_20_RFC_RD_TAB is
unable to process the table.

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?

Exclude the table from analysis and perform manual comparison.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

CNV_CMIS_A_20_FUNC300 - Details

• The SAP error message CNV_CMIS_A_20_FUNC300 with the system exception ASSIGN_CASTING_ILLEGAL_CAST typically occurs during data conversion processes, particularly when using the SAP Conversion Management (CM) tools. This error indicates that there is an issue with data type casting or assignment in the specified table.
  
  Cause:
  
  Data Type Mismatch: The most common cause of this error is a mismatch between the expected data type and the actual data type of the fields in the specified table (&1). For example, if the program expects a numeric value but encounters a character string, this error can occur.
  Inconsistent Data: The data in the source table may not conform to the expected format or type, leading to casting issues during the conversion process.
  Custom Code Issues: If there are custom enhancements or modifications in the conversion program, they might be causing the illegal cast.
  
  
  Solution:
  
  Check Data Types: Review the data types of the fields in the specified table. Ensure that