How To Fix /UI2/PAGEBUILDER021 - Default RFC destination not maintained in table "/UI2/MERGE_CAT"

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI2/PAGEBUILDER -

• Message number: 021

• Message text: Default RFC destination not maintained in table "/UI2/MERGE_CAT"

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 /UI2/PAGEBUILDER021 - Default RFC destination not maintained in table "/UI2/MERGE_CAT" ?

  The SAP error message /UI2/PAGEBUILDER021 indicates that the default RFC destination is not maintained in the table /UI2/MERGE_CAT. This error typically occurs in the context of SAP Fiori applications or when using the SAP UI5 framework, where the system is unable to find the necessary configuration for the RFC destination required to fetch data or perform operations.
  
  Cause:
  
  Missing Configuration: The default RFC destination required for the application is not set up in the /UI2/MERGE_CAT table.
  Transport Issues: If the system was recently upgraded or transported, the necessary configurations might not have been included.
  Authorization Issues: The user may not have the necessary authorizations to access the required RFC destination.
  System Configuration: The system might not be properly configured to connect to the backend services.
  
  
  Solution:
  
  
  Maintain RFC Destination:
  
  Go to transaction code SE11 (Data Dictionary) and enter the table name /UI2/MERGE_CAT.
  Check if the default RFC destination is maintained. If not, you will need to add the appropriate