How To Fix RSDS339 - Implicit conversion of external format not supported for field &1

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDS - New DataSource

• Message number: 339

• Message text: Implicit conversion of external format not supported for field &1

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 RSDS339 - Implicit conversion of external format not supported for field &1 ?

  The SAP error message RSDS339, which states "Implicit conversion of external format not supported for field &1," typically occurs in the context of data extraction or transformation processes, particularly when dealing with data sources in SAP BW (Business Warehouse) or SAP HANA.
  
  Cause:
  This error arises when there is a mismatch between the data types or formats of the source data and the target data structure in SAP. Specifically, it indicates that the system is unable to automatically convert the data from one format to another for a specific field (denoted by &1 in the error message). Common causes include:
  
  Data Type Mismatch: The source field's data type does not match the target field's data type. For example, trying to load a string into a numeric field.
  Format Issues: The format of the data being extracted does not conform to the expected format in the target system. This can happen with date formats, decimal