How To Fix UC771 - Field lengths of receiver &1 and sender field &2 are different

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 771

• Message text: Field lengths of receiver &1 and sender field &2 are different

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message UC771 - Field lengths of receiver &1 and sender field &2 are different ?

  The SAP error message UC771 indicates that there is a mismatch in the field lengths between the sender and receiver fields in a data transfer or mapping process. This typically occurs in scenarios involving data transfer between different systems, such as during IDoc processing, BAPIs, or when using data services.
  Cause:
  The error arises when:
  
  The length of the data being sent from the sender field does not match the expected length of the receiver field.
  This can happen due to differences in data structure definitions, such as when the sender and receiver systems have different data types or field lengths defined for the same data element.
  It may also occur if there are changes in the data model that have not been synchronized between the sender and receiver systems.
  
  Solution:
  To resolve the UC771 error, you can take the following steps:
  
  
  Check Data Definitions:
  
  Verify the data element definitions in both the sender and receiver systems. Ensure that the field lengths and data types match.
  If you are using custom fields, ensure that they are defined consistently across both systems.
  
  
  
  Adjust Field Lengths:
  
  If the sender field is longer than the receiver field, consider truncating the data on the sender side or increasing the length of the receiver field if possible.
  Conversely, if the receiver field is longer, ensure that the sender data fits within the defined length.
  
  
  
  Mapping Configuration:
  
  If you are using a mapping tool (like SAP PI/PO or SAP Data Services), check the mapping configuration to ensure that the field lengths are correctly defined and that any transformations are appropriately set up.
  
  
  
  Data Validation:
  
  Implement data validation checks before the data transfer to ensure that the data conforms to the expected formats and lengths.
  
  
  
  Testing:
  
  After making adjustments, perform tests to ensure that the data transfer works without errors.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific transaction or process you are working with for any additional guidance or known issues.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  Data Dictionary: Use transaction SE11 to view and compare the data element definitions in the ABAP Data Dictionary.
  Debugging: If necessary, use debugging tools to trace the data flow and identify where the mismatch occurs.
  
  By following these steps, you should be able to identify and resolve the cause of the UC771 error in your SAP environment.