How To Fix CNV_00001154 - No conversion routine could be assigned to field &2 of table &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_00001 - Message class for CWB settings maintenance programs

• Message number: 154

• Message text: No conversion routine could be assigned to field &2 of table &1

System Response
The conversion program for table &V1& will not be generated correctly.
Procedure
If table &V1& is a SAP standard table please contact SAP support by
opening the OSS message.
If table &V1& was created by you you will be able to provide the
conversion routine in the activity "Settings for New Conversion-relevant
Tables and Fields".

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_00001154 - No conversion routine could be assigned to field &2 of table &1 ?

  The SAP error message CNV_00001154 indicates that there is no conversion routine assigned to a specific field in a table during a data migration or conversion process. This error typically arises in the context of using the SAP Data Migration Workbench or during the execution of a conversion program.
  Cause:
  The error occurs when:
  
  A field in a table is expected to have a conversion routine defined, but none is assigned.
  The field may be of a data type that requires a specific conversion routine (e.g., date formats, currency conversions).
  The configuration for the data migration or conversion process is incomplete or incorrect.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Field Configuration:
  
  Identify the specific field (&2) and table (&1) mentioned in the error message.
  Review the data dictionary (SE11) for the table and check the field's properties.
  
  
  
  Assign Conversion Routine:
  
  If the field requires a conversion routine, you need to assign an appropriate routine. This can be done in the relevant configuration settings for the data migration or conversion process.
  You can use transaction SE11 to check the field's data element and see if a conversion routine is defined.
  
  
  
  Modify Data Migration Settings:
  
  If you are using a migration tool (like LSMW or SAP S/4HANA Migration Cockpit), ensure that the mapping for the field includes a conversion routine.
  Check the migration project settings to ensure that all necessary conversion routines are included.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific migration or conversion process you are using. There may be specific instructions or known issues related to the error.
  
  
  
  Testing:
  
  After making the necessary changes, re-run the migration or conversion process to see if the error persists.
  
  
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE37 (Function Modules), LSMW (Legacy System Migration Workbench).
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  Data Migration Workbench: Familiarize yourself with the tools and processes involved in data migration within SAP, as understanding the overall framework can help in troubleshooting.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.