How To Fix CNV_PE858 - Data type &1 is not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE - General messages for posting engine

• Message number: 858

• Message text: Data type &1 is not supported

What causes this issue?

The data type &V1& is <ZH>not</> supported.
The object, to which this field belongs to, will be present as structure
in the signature of the generated function module <LS>WL150</> (Write
Function for Worklist of an Area). A structure of a function module must
be a flat structure. Internal tables, strings, references, and
structures <ZH>cannot</> be used as components.

System Response

Error

How to fix this error?

Use a different data type

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_PE858 - Data type &1 is not supported ?

  The SAP error message CNV_PE858, which states "Data type &1 is not supported," typically occurs during data migration or conversion processes, particularly when using the SAP Landscape Transformation (SLT) or other data migration tools. This error indicates that the data type specified (represented by &1) is not recognized or supported by the system or the specific migration tool being used.
  Causes:
  
  Unsupported Data Types: The data type being used in the source system may not be compatible with the target system or the migration tool. This can happen if the source system has custom data types or if the data type is not standard in SAP.
  Configuration Issues: There may be configuration settings in the migration tool that do not support certain data types.
  Version Mismatch: The version of the migration tool or the SAP system may not support the data type due to differences in versions or updates.
  Data Mapping Errors: Incorrect mapping of fields between the source and target systems can lead to unsupported data types being referenced.
  
  Solutions:
  
  Check Data Types: Review the data types in the source system and ensure they are compatible with the target system. Refer to SAP documentation for supported data types.
  Modify Data Mapping: If the data type is unsupported, consider modifying the data mapping to use a compatible data type. This may involve changing the data type in the source system or adjusting the mapping configuration in the migration tool.
  Update Migration Tool: Ensure that you are using the latest version of the migration tool. Updates may include support for additional data types.
  Consult SAP Notes: Check SAP Notes and Knowledge Base Articles (KBAs) for any known issues or fixes related to this error message. SAP frequently updates its documentation and provides solutions for common issues.
  Custom Data Types: If you are using custom data types, consider creating a compatible version of the data type or using a standard data type that can be mapped correctly.
  Testing: Conduct thorough testing of the migration process with a subset of data to identify and resolve any issues before performing a full migration.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for data migration and the specific tools you are using (e.g., SLT, SAP Data Services).
  SAP Community: Engage with the SAP Community forums to seek advice from other users who may have encountered similar issues.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed information about the error and the context in which it occurs.
  
  By following these steps, you should be able to identify the cause of the CNV_PE858 error and implement a suitable solution.