ah thank you, what would be considered the long number in terms of a refund form? The whole number or just the bit excluding the ticket number?
I'd be inclined to include everything apart from the last two items, as they just indicate the print format and version.
Taking 12345-1234-3087-01-06-X01 as an example:
12345 is the ticket number (if the ticket had any reservations printed on it there may be a second ticket number printed next to it)
1234 is the ticket machine identifier (not unique on its own)
3087 is the issuing location (in this case London Paddington Ticket Office)
01 is the window number
06 tells you it's using a version 06.xx print format
X01 is the specific print format, in this case an Anytime Single