DELIVERY CHALLAN APPLICABILITY

1). YES Applicable...

2). Yes E-Way can be prepared with the help of a Delivery Challan. Delivery Challan is issued incase of Transaction other than "Supply" like when the goods are being moved for Job Work from the Registered Person's place to the place of Job Worker for Job Work...

3). Delivery Challan can be issued if there is no requirement of issuing Tax Invoice ( like Job Work Procedure, Goods are being moved to some other place of business etc ). You will not be punishable if you carry proper documents with you along with the E-Way Bill. If Tax Invoice is not required to be issued, then you can use Delivery Challan. There's no problem. The Officer will not punish you since you are carrying the valid documents for transportation...

4). The value of the E-Way Bill should always match with the value of the Tax Invoice or Delivery Challan, as the case may be. If this does not matches, then you might face trouble in the road checks. So upload the correct Tax Invoice with the correct value while generating the E-Way Bill from the eway bill portal.

If price is not determined at the time of delivery, the value of invoice and delivery challan can differ.
What to do in such case sir.

Generated in 1 price...
and in case of price change issue debit notes / credit notes