How To Fix UC799 - The sender structure does not contain character-like fields

UC799 - Overview

• Message type: E = Error

• Message class: UC - FI/CO Data transfer: errors during transfer

• Message number: 799

• Message text: The sender structure does not contain character-like fields

What causes this issue?

The DDIC structure for data transfer (sender structure maintenance OKCC,
KEFA) contains fields not of the C, N, or D type.

System Response

Warning

How to fix this error?

If you set up a data transfer from an SAP report, ignore the warning.
During an external data transfer from a presentation server file, the
DDIC structure must consist of purely character-like fields of the C, N
or D type. Otherwise, this leads to termination due to Unicode errors.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

UC799 - Details

• The SAP error message UC799, which states "The sender structure does not contain character-like fields," typically occurs in the context of data transfer processes, such as when using the SAP Data Transfer Workbench or during data migration activities. This error indicates that the structure you are trying to use as a sender does not have any fields that are of a character-like data type (e.g., CHAR, STRING, etc.).
  
  Cause:
  
  Data Structure Definition: The sender structure defined in your data transfer process does not include any fields that are character-like. This could be due to the structure being defined with numeric or other non-character data types only.
  Incorrect Mapping: The mapping between the source and target structures may not be set up correctly, leading to the absence of character-like fields in the sender structure.
  Data Source Issues: If the data source (like a database table or a file) does not contain character-like fields, this error