The rules are this by example
SC01234567, SC12345678 are valid
1234567 is good
01234567 is not valid
Greater than 8 numbers is not valid,
Less than 7 characters is not valid.
Only the prefix SC are valid characters plus 8 numeric
The company number has eight numbers and where the SC prefix is not used any leading zero is removed
I have got to this point but I am struggling to make each half of the or mutally exclusive.
Question/Request: Each half works fine but I would ideally like them apply the rules above properly.