How To Fix UC793 - Type &1 of sender field &2 not allowed

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 793

• Message text: Type &1 of sender field &2 not allowed

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message UC793 - Type &1 of sender field &2 not allowed ?

  The SAP error message UC793 indicates that there is an issue with the data type of a sender field in a process, typically related to the use of a data element or structure that is not compatible with the expected type. This error often arises in the context of data transfer or interface processing, such as in IDocs, BAPIs, or other data exchange mechanisms.
  Cause:
  The error message "UC793 Type &1 of sender field &2 not allowed" generally occurs due to one of the following reasons:
  
  
  Data Type Mismatch: The sender field's data type does not match the expected data type in the receiving system or process. For example, if the sender is trying to send a character field but the receiver expects a numeric field.
  
  
  Field Length Issues: The length of the data being sent may exceed the maximum length allowed for the receiving field.
  
  
  Incorrect Mapping: There may be an issue with the mapping of fields between the sender and receiver, where the wrong field is being referenced or mapped.
  
  
  Configuration Issues: There may be configuration settings in the SAP system that are not set up correctly, leading to this error.
  
  
  Solution:
  To resolve the UC793 error, you can take the following steps:
  
  
  Check Data Types: Verify the data types of the sender and receiver fields. Ensure that they match and are compatible. You can do this by checking the data dictionary (SE11) for the relevant data elements.
  
  
  Review Field Lengths: Ensure that the length of the data being sent does not exceed the maximum length defined for the receiving field. Adjust the data or the field definitions as necessary.
  
  
  Mapping Verification: Review the mapping configuration to ensure that the correct fields are being used. If you are using a middleware or interface tool, check the mapping settings.
  
  
  Debugging: If you have access to debugging tools, you can set breakpoints in the relevant ABAP code to see the values being passed and identify where the mismatch occurs.
  
  
  Consult Documentation: Check the SAP documentation or notes related to the specific transaction or process you are working with. There may be known issues or additional configuration steps required.
  
  
  Testing: After making changes, perform tests to ensure that the error is resolved and that data is being processed correctly.
  
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may want to look into transaction codes like WE02 (IDoc display), WE19 (IDoc test), or SE37 (Function Module) to analyze the data flow.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  Community Forums: Consider checking SAP Community forums or other user groups for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to identify and resolve the cause of the UC793 error in your SAP system.