patch https://shoppingcart.ppe.amdocs-dbs.cloud/shoppingCart//cartItem/
Updates an existing cartItem in the provided shopping cart. Perform partial update of a shoppingcart. Providing any of the array type input fiels as part of the PATCH request, will completely replace the contents of the array
as also defined in JSON Merge Patch
Can be called by: user,m2m,customer,unauthenticated
Required roles: sc.ops