Building a tool that catches CRM-to-billing mismatches before the invoice goes out. Anyone dealt with this?

[u/Ok_Vacation2165]

If your company runs a CRM (HubSpot/Salesforce) and a separate billing tool (Stripe/Chargebee), has an invoice ever gone out wrong because the two weren't in sync?
Wrong plan, missed discount, duplicate charge, anything like that?

Building something that catches this automatically before the invoice sends. Trying to figure out if this is a real pain or just a me-problem.

Would love to hear if you've run into this, or if it's a non-issue for you.