Jobwork - Billing

Dear Experts,

X Pvt Ltd doing job work for Y Pvt Ltd.

For Example : Job work cost for Rs.10 for 10 Nos. (100 + GST).

During the material delivery government official raising query,  why X PVT LTD company not mentioning the actual material cost of the job.

Y Pvt Ltd company only sold 10 Nos @ Rs.50 (with them margin).

How we can show in our invoice or E- way bill..

There is any option in E- Way , Please share.

Thanks & Regards

Fareed