How To Fix RSCNV420 - GUI error: &1: &2

SAP Error Message - Details

• Message type: E = Error

• Message class: RSCNV - Messages class for Metadata Remodeling Toolbox

• Message number: 420

• Message text: GUI error: &1: &2

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 RSCNV420 - GUI error: &1: &2 ?

  The SAP error message RSCNV420 typically indicates a problem related to data conversion or data transfer in the SAP system. The message format &1: &2 usually provides specific details about the error, where &1 and &2 are placeholders for additional information that can help identify the exact issue.
  Cause:
  
  Data Type Mismatch: The error may occur due to a mismatch in data types during data transfer or conversion processes.
  Invalid Data: The data being processed may contain invalid characters or formats that cannot be converted properly.
  Configuration Issues: There may be issues with the configuration of the data transfer or conversion settings in the SAP system.
  System Limitations: The error could also arise from limitations in the system, such as memory issues or restrictions on data size.
  
  Solution:
  
  Check Data Types: Review the data types of the fields involved in the conversion or transfer process. Ensure that they match the expected types.
  Validate Data: Inspect the data being processed for any invalid characters or formats. Cleanse the data if necessary.
  Review Configuration: Check the configuration settings related to the data transfer or conversion process. Ensure that they are set up correctly.
  Error Details: Look at the specific details provided in the error message (the values of &1 and &2) to get more context about the issue. This can guide you to the specific area that needs attention.
  Consult Logs: Check the application logs (transaction SLG1) for more detailed error messages that can provide additional insights.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide patches or updates.
  
  Related Information:
  
  Transaction Codes: Depending on the context of the error, you may want to look into specific transaction codes related to data transfer (e.g., LSMW, BAPIs, IDocs).
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found.
  Documentation: Review SAP documentation related to data conversion and transfer processes for best practices and troubleshooting tips.
  
  If the issue persists after trying the above solutions, it may be beneficial to involve your SAP Basis or technical team for further investigation.