Issue while using very simple PATCH method for OData for ContactCollection

Dear All,

We are trying to Update the Contact Email from Odata service.

Somehow its not working! and I am getting Error message as response:

The Data Services Request contains SystemQueryOptions that are not allowed for this Request Type

And I am following standard Odata guidelines provided by SAP.

https://help.sap.com/doc/d0f9ba822c08405da7d88174b304df84/LATEST/en-US/index.html#/topic/Contact

As you can see my Request payload is also as simple as it can get :( but no success.

FYI : I am passing all other things like X-csrf-token and everything.

Has anyone faced this issue?

Regards, Dhruvin