So it looks like you want to use the numbers on the left of you unit. XX123456789-PCH1001 the first 11 are the numbers it wants. Those are the numbers you use when you resister it at at the playstation website also. If anyone wasn't to join in shoot me a pm.
No dice here...tried all different combinations but it refuses to register my barcode.
Edit: Derp, apparently the two first letters have to be capitalized. Whatever Sony