Message type: E = Error
Message class:  CNV21500 - Messages for HR conversions basis 
Message number: 038
Message text: Export routine is fun. mod., but structure of RELID <&1, &2> not in DDIC
Export routine indicated in CNV_INDX_MACROS for RELID <&v1&,&v2&>
is function module, but structure of this RELID is not in defined in
DDIC.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
For this RELID you probably must use macros to export data. Please
maintain CNV_INDX_MACROS and CNV_INDX_MACPARS tables correctly.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV21500038 indicates that there is an issue with the export routine in a conversion process, specifically that the structure associated with the given RELID (Release ID) is not found in the Data Dictionary (DDIC). This error typically arises during data migration or conversion activities, particularly when using SAP's data migration tools.
Cause: Missing Structure in DDIC: The structure specified by the RELID is not defined in the Data Dictionary. This could be due to a missing transport or an incomplete installation of a component. Incorrect Configuration: The configuration for the data migration might be incorrect, leading to the system looking for a structure that does not exist. Version Mismatch: There may be a version mismatch between the source and target systems, where the structure exists in one system but not in the other. Custom Development: If the structure is custom-developed, it may not have been properly transported to the target system.
Solution: Check
 Get instant SAP help. Sign up for our Free Essentials Plan.
Get instant SAP help. Sign up for our Free Essentials Plan. 
/SMB/Q2P_DEPLOY060 Enter exemption reason
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
/SMB/Q2P_DEPLOY059 Enter exemption validity
Self-Explanatory Message Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of...
CNV21500039 Structure of RELID <&1,&2> defined in DDIC, however imp. routine is macro
What causes this issue?  Structure of RELID <&v1&,&v2&> is defined in DDIC, however import routine indicated in CNV_INDX_MACROS ...
CNV21500040 Structure of RELID <&1,&2> defined in DDIC, however exp. routine is macro
What causes this issue?  Structure of RELID <&v1&,&v2&> is defined in DDIC, however export routine indicated in CNV_INDX_MACROS ...
Click on this link to search all SAP messages.