Create request in cross scope

[Rachael12]

I have a requirement where in certain condition when a request is placed through catalog form A in Global scope then it automatically must call another catalog form B in XYZ scope and place a request in it.

I have tried various methods but is still unable to achieve it. In the workflow of form A, I am trying to pass values in script include in XYZ scope and have written cart functionality in it but that does not work.
I tried to create cross scope privilege with Source as Global and target as 'XYZ' scope but that throws error.
I have tried Restricted Caller Access Privilege.

Can you please help in achieving the requirement.

Thanks in advance

[Rachael12]

It is created through Workflow editor. It is an existing complex workflow in which I am replacing an activity with automatic ticket creation(this form is in different scope).