What links the two ledgers?

Amount, time and provider or casino reference.

Can unrelated statement details be hidden?

Yes, unless the secure request explicitly requires them.

CHECK 01

Do not send the same amount again while the first transaction is unresolved.

CHECK 02

Record amount, currency, time, payee label and the bank or wallet transaction identifier.

CHECK 03

Look for pending, declined, reversed or credited status under the same time and amount.

CHECK 04

Give support both references and the expected credit, with unrelated financial details masked.

Should an unresolved deposit be repeated immediately?: No.
What links the two ledgers?: Amount, time and provider or casino reference.
Can unrelated statement details be hidden?: Yes, unless the secure request explicitly requires them.