Itc & return

Sir,

I have a service centre where I provide in warranty service for a Mobile Company.

Company billed me GST invoice for the spare parts to replace the faulty parts to the in warranty handsets against the job sheet I maintain in my workshop.

But I don’t sell the parts , I only replace the parts & Faulty party sent to the company.

Now my query is

1. Can I claim ITC for the spare part billed to me by the company & how can I show consumption of those parts in my return.