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According to ROLAGS section 6.3, long cracks over 14 inches should not be repaired. Insurance companies oftentimes will cover cracks longer than 6" but it has to be at the customer's insistance. Since there is no EDI "part number" for a long crack, you should notify the claim center that you will be billing for 2 or 3 chips due to the length of the crack. If it is an insurance job, they will expect the usual warranty. If it is a cash job, decide whether the warranty applies based on the age of the crack and how much it may have been contaminated. Make sure the customer knows the warranty before you do the repair.