How To Fix CNV_00001229 - Source package not defined for field &1 of table &2.

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 229

• Message text: Source package not defined for field &1 of table &2.

What causes this issue?

Source package not defined for field &V1& of table &V2&. This can happen
if more conversion packages are blended together and more than one
package wants to convert the field &V1&. The problem can also occur for
manually added conversion-relevant fields if the current conversion
package was created from more than one source package.

System Response

The lack of source package definition may lead to unsuccessful relevance
check during the conversion which usually causes the wrong data to be
converted.

How to fix this error?

Provide the source package for conversion-relevant field &V1& of table
&V2&
If you choose a conversion routine that belongs to a given source
package then the source package will be filled automatically. If there
is only one source package available it will also be updated
automatically. The source package should only be specified explicitly if
a custom conversion routine is provided.

Procedure for System Administrators

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_00001229 - Source package not defined for field &1 of table &2. ?

  The SAP error message CNV_00001229 indicates that there is a problem with the data migration process, specifically that a source package has not been defined for a particular field in a specified table. This error typically arises during data conversion or migration activities, often when using SAP's data migration tools or during the execution of a conversion program.
  Cause:
  The error occurs when:
  
  A field in a target table is expected to have a corresponding source package defined, but it is missing.
  The mapping between the source and target data structures is incomplete or incorrectly configured.
  The data migration project may not have been set up correctly, or the necessary configurations for the source data are missing.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Configuration:
  
  Verify that the source package for the field in question is correctly defined in the data migration project. This can usually be done in the transaction or tool you are using for data migration (e.g., SAP S/4HANA Migration Cockpit, LTMC, etc.).
  
  
  
  Review Mapping:
  
  Ensure that the mapping between the source and target fields is correctly set up. Check if the field in the target table has a corresponding source field defined in the source package.
  
  
  
  Update Source Package:
  
  If the source package is missing, you may need to create or update it to include the necessary field mappings. This may involve defining the source structure and ensuring that all required fields are included.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation or guides related to the specific data migration tool you are using. There may be specific instructions or prerequisites that need to be followed.
  
  
  
  Check for Updates:
  
  Ensure that your SAP system is up to date with the latest support packages and notes, as there may be fixes or enhancements related to data migration.
  
  
  
  Testing:
  
  After making the necessary changes, re-run the migration process to see if the error persists. It may be helpful to test with a smaller dataset first.
  
  
  
  Related Information:
  
  Transaction Codes: Depending on the migration tool you are using, you may need to use specific transaction codes (e.g., LTMC for Migration Cockpit).
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to the CNV_00001229 error.
  Data Migration Tools: Familiarize yourself with the data migration tools available in your SAP environment, as they may have specific features for handling source-target mappings.
  
  If the issue persists after following these steps, consider reaching out to SAP support or consulting with a technical expert who specializes in data migration within SAP systems.