How To Fix CNV_00001604 - No technically suitable conversion routine found; see long text

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 604

• Message text: No technically suitable conversion routine found; see long text

What causes this issue?

Field &V2& or table &V1& is not delivered by SAP. The system assigns the
conversion routines automatically, based on the data type of the field.
However, no suitable conversion routine was found for this field.
Note:
The assignment of the conversion routine takes into account only
technical attributes of the conversion-relevant field (data element and
/ or domain). If the data contained in this field does not correspond to
the data indicated by its data element or domain, the conversion can
fail (although technically all settings are correct).

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?

Create an appropriate conversion routine, and assign it to the field.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_00001604 - No technically suitable conversion routine found; see long text ?

  The SAP error message CNV_00001604 indicates that there is no technically suitable conversion routine available for the data being processed. This error typically occurs during data migration or conversion processes, particularly when using SAP's Data Migration tools or during the execution of a conversion program.
  Cause:
  
  
  Missing Conversion Routine: The primary cause of this error is that the system cannot find a suitable conversion routine for the data type or field being processed. This can happen if:
  
  The required conversion routine has not been implemented or is not active.
  The data type of the source field does not match any of the available conversion routines.
  The conversion routine is not defined in the relevant namespace or is not accessible.
  
  
  
  Incorrect Data Mapping: If the data mapping between the source and target systems is incorrect or incomplete, it may lead to this error.
  
  
  Configuration Issues: There may be configuration issues in the data migration settings or in the source/target system that prevent the conversion from being executed properly.
  
  
  Solution:
  
  
  Check Conversion Routines: 
  
  Verify that the necessary conversion routines are implemented and active in the system. You can check this in transaction SE37 (Function Modules) or SE80 (Object Navigator).
  Ensure that the conversion routines are correctly defined for the data types you are working with.
  
  
  
  Review Data Mapping: 
  
  Check the mapping of fields between the source and target systems. Ensure that the data types and formats are compatible.
  If you are using a migration tool, review the mapping configuration to ensure that all necessary fields are included and correctly mapped.
  
  
  
  Custom Conversion Routines: 
  
  If a suitable standard conversion routine does not exist, you may need to create a custom conversion routine. This can be done by implementing a new function module that handles the specific conversion logic required for your data.
  
  
  
  Consult Documentation: 
  
  Review the long text associated with the error message for additional context and guidance. This can often provide insights into what specific data or field is causing the issue.
  
  
  
  Testing: 
  
  After making changes, perform tests to ensure that the conversion now works as expected. Monitor for any additional errors that may arise.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE37 (Function Modules), SE80 (Object Navigator), and others that may help in debugging and resolving the issue.
  SAP Notes: Check for any SAP Notes related to this error message or the specific conversion routines you are using. SAP Notes often contain important information about known issues and their resolutions.
  Community Forums: Consider searching or posting in SAP community forums or support channels for additional insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution.