Corporate Credit Card Transactions not Validating

I am trying to implement Corporate cards within the expenses module and we have uploaded a few files from the bank, but I have found that they have all gone into a "Not Validated" status.

1. How do I see the reason for it not being validated?
2. If I can fix the reason it is not validated, is there a way of processing them again through to being validated?

I think one of the reasons that its not validating is that the Corporate Card or Token has an extra zero at the beginning to what had been recorded in our system, I have added an employees details to the newly created record, the name is now pulling through but its still not validating, so I am thinking that there must be an extra step or there is another reason its not validating.