Message type: E = Error
Message class:  CNV_PE_GEN - Messages for object generation 
Message number: 007
Message text: Field name &1 is not valid for object &2
Field name &V1& is <ZH>not </>allowed for object &V2& (&V3&)
If object &V2& is a DDIC structure:
This will not result in an error as long as you do not use the structure
in a table as an include. You may not use the table in a new database
table as an include and may not add it to an active database table which
already exists. The table activating program rejects it because use of
this database table can result in errors, depending on the database
system.
If object &V2& is a DDIC structure: Consider restrictions above.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_PE_GEN007, which states "Field name &1 is not valid for object &2," typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that the specified field name is not recognized as valid for the given object type in the context of the migration.
Cause: Field Name Mismatch: The field name specified in the migration data does not exist in the target object or is incorrectly spelled. Object Type Issues: The object type specified may not support the field being referenced, possibly due to changes in data structures between versions or incorrect mapping. Data Model Changes: If the data model has changed (e.g., during an upgrade or migration), certain fields may have been deprecated or replaced.
Configuration Issues: There may be configuration issues in the migration settings that lead to incorrect field mappings.
Solution: Verify Field Names: Check the field
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
CNV_PE_GEN006 Generation of DDIC object not possible; mandatory info missing
What causes this issue?  While checking the information to generate object &V1& (&V2&), it was determined that some mandatory informat...
CNV_PE_GEN005 An error occurred while trying to update number range &1
What causes this issue?  Function &V2& ended with errors.System Response  The system issues an error message and will not allow you to continu...
CNV_PE_GEN008 Activation of object &1 failed
What causes this issue?  The activation of object &V1& (&V2&) failed.System Response  The system issues an error message and will not ...
CNV_PE_GEN009 Generation of object &1 failed
What causes this issue?  The generation of object &V1& (&V2&) failed.System Response  Error:<ZH> &V3&</>How to fix...
Click on this link to search all SAP messages.