Ask whether the professional scope includes relevant pre-travel and post-admission document review and how any discrepancy would be handled.
Separate routine review from any additional process
Clarify professional charges and any official fees applicable to the actual issue. Do not assume every mismatch requires the same action or that the original preparation automatically includes all later work. Ask which of three things a given piece of work is, because the answer determines who pays and when.
A routine pre-travel comparison usually sits inside the original preparation scope. Advice on what a discovered discrepancy means is assessment, and may or may not. Any filing or formal request that follows is separate work carrying its own official charges.
Agree that division before a problem appears rather than while one is being solved, and ask specifically what happens if the review finds nothing, since a scope quoted per issue and a scope quoted per review behave differently in that case. Where an employer is paying, confirm whether its authorization covers only the principal or the dependants as well; households frequently discover mid-process that the dependent review was never within the employer's instruction, and the decision about whether to proceed then arrives at the least convenient moment. Ask, finally, whether the quoted scope includes a second look once any correction has been made, or ends when the advice is given; those are different products and only one of them closes the matter.