At UConn we use Appzen with Concur. We implemented the software around October of last year but we haven't been able to test it to much because of COVID. Although our experience is limited I have found Appzen very helpful to our office by removing some of the manual work that we used to do such as detecting unallowable expenses or identifying duplicate expenses. The impact on employees and travelers is very limited which has been helpful.

At Eastern Michigan University we are in the process of implementing Appzen's Detect module to use with Concur. It appears to be exactly what we thought it would be but we are still in the reviewing process.

At GWU we are using AppZen with Concur. It's out of the box audit rules help us detect missing receipts and duplicates, but I wish there was a way to build in more customizable audit rules on our own.

Bumping this up to see if anyone can share their feedback with audit tools they have or will be implementing that interface with Concur?

I am interested in hearing what other institutions are doing in regard to expense auditing.

Do you perform full or partial audits?
Do you perform a a full audit prior to processing reimbursements or does audit take place post reimbursement?
Do you audit a selection of transactions (such as high dollar, international, grant funded)? If so, is the audit performed before or after reimbursement?
How do you measure compliance and overall expense report accuracy?