What are the parameter need pass to submit a requisition for approval using REST API

Hi all,

I have created a requisition using SOAP web-service as a incomplete status.Now i want to submit it for approval using the below REST API.

/fscmRestApi/resources/11.13.18.05/purchaseRequisitions/{purchaseRequisitionsUniqID}

In The RequisitionUniqID I am passing Requisition number.So in the above Rest API example it is not clearly mentioned the parameter that we need to send.If anyone has done earlier please tell me the procedure.

Thanks

Pritam Das