Receiver REST adapter PATCH method

Hi experts,

We have a scenario where we need to consume a restful service using PATCH as the method. However, only the four CRUD methods GET,PUT, DELETE and POST are available on the REST Operation tab. Using PUT method we are not able to consume it.

Are PATCH operations supported by the REST adapter or is there any method/workaound to enable it? Please, notice that our system release is PI 7.40 SP11

Thanks in advance,

Samantha.