Unique Ticket Number field for Air travel expenses.

Summary:

We have a requirement where we would like to know if it is possible to configure Oracle Fusion Expenses to enforce a unique ticket number for Air Travel entries. Specifically, our goal is to implement a validation mechanism that would alert users if they attempt to enter a duplicate ticket number for Air Travel expenses. This feature would be instrumental in preventing duplicate entries and ensuring the accuracy of our expense records.

Please tell whether this can be implemented in oracle fusion or not , if not please suggest a workaround for this issue.

Any guidance or best practices on this matter would be greatly appreciated.