A client bought a package instead of a single service. Someone rescheduled. A form came through without the right field. A team member did not know which screen to check. Suddenly the "system" required you to step in and remember what was supposed to happen.

That is the clue.

A business system is not the software. It is the sequence of decisions, handoffs and actions the software is supposed to support.

Your business may not need another tool. It may need someone to find out why the tools you already have are making the business harder to run.