The Screening Guidelines list the acts of counterparty in a transaction that warrant precaution for export control purposes.
For example, review of the transaction is needed if the answer to any of the following questions is yes.
Number 3 "The customer is reluctant to offer information about the place to install or use the items"
Number 8 "The customer orders unusually excessive number of spare parts of the items."
You need to confirm the counterparty's behavior is suspicious or not.
The transaction she'll be prohibited in general if the answer to any of the questions in the Guidelines is "YES".
Transaction may be allowed only if justifiable reasons can be given to the answer.