How To Fix CNV_PE_GEN120 - Unable to generate DDIC structure &1 - field names not allowed

CNV_PE_GEN120 - Overview

• Message type: E = Error

• Message class: CNV_PE_GEN - Messages for object generation

• Message number: 120

• Message text: Unable to generate DDIC structure &1 - field names not allowed

What causes this issue?

Generation of DDIC structure &V1& is not possible. At least one of its
fields has name &V2& that is not allowed.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

CNV_PE_GEN120 - Details

• The SAP error message CNV_PE_GEN120 indicates that there is an issue with generating a Data Dictionary (DDIC) structure due to the presence of field names that are not allowed. This error typically occurs during data migration or conversion processes, particularly when using SAP's tools for data transfer or transformation.
  
  Cause:
  The error is usually caused by one or more of the following reasons:
  
  
  Invalid Field Names: The field names in the structure you are trying to generate may contain invalid characters or may not conform to SAP naming conventions. For example, field names should not start with a number, should not contain special characters (except for underscores), and should not exceed the maximum length.
  
  
  Reserved Keywords: The field names may be using reserved keywords or names that are already used by SAP or other objects in the system.
  
  
  Data Type Issues: There may be inconsistencies in the data types defined for the fields, which can