How to Modify HARDWARE ASSET WORKSPACE in ServiceNow

[Swetha45]

Hello Everyone

We have a requirement from the client to Hide/Disable the below "Vendor Purchase" tab from HAM Workspace.

Navigation: Hardware Asset Workspace --> Hardware Asset Overview --> Quick Links --> Refresh requests --> Open the RITM --> Open the Request attached to it --> Click on More --> Open Catalog Task --> Click on "Source Request"

Then you will get the below page:

So, I need help on how to remove "Vendor Purchase" tab in that container.

I tried to modify it through the UI Builder --> Experiences --> Hardware Asset Workspace --> Source Request Default
But, getting the below message. 

Read-only. The page definition and variant are in different application scopes.

Is there any other way or any possible way to achieve this requirement?
Thanks in Advance...
Hardware Asset Management (HAM) 

ITAM: Hardware Asset Management || Knowledge & Troubleshooting Resources 

[Kameliya]

I do believe what you see in the workspace is actually the source_request UI page, called from the UI Action Source Request script. UI action itself is in the global scope and configuration should not be performed by using the UI Builder. 

[DavidWallace1]

The source request page is actually $source_request (source_request is an old one) - which you can't change even in the normal UI - see here Solved: Source Request UI Page - $source_request (not sour... - ServiceNow Community