Making reimbursement workflows extensible

Reimbursements are a good test of workflow design because they combine user input, review state, accounting context, and payout status.

A strong implementation should make those transitions obvious. Who submitted the request, who reviewed it, why it changed state, and how it maps to accounting should all be easy to trace.

Open-source software gives teams a better starting point for unusual cases. They can extend validation, add review steps, change notification behavior, or connect payout events to their own systems.

Parowin keeps reimbursement flow part of the same open spend model instead of treating it as a sealed feature.