Mapping to a Webservice in a Loop

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Mapping to a Webservice in a Loop

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Hi Guru's

I have an Integration which consumes a rest api to retrieve data, which I have to loop through to get the different lines and fields.

I then have to map it to the PurchaseRequest webservice which inserts it into the requisition interface table and submits the import requisition program.

Can anybody give me pointer on How I can map in a loop and if need repeat the interface lines node for how many lines there are ie. when there are 5lines the node should repeat 5time and if only 1 it only repeats once.