Stop QBO from guessing invoice numbers?

Hello bbealsor, 

Welcome to the Community. It's important you're able to have the invoice numbers added the way you intend to. Rest assured, I'll be happy to steer you in the right direction so you can get back to doing what you enjoy. 

In order for you to be able to us a custom sequence of invoice numbers you'd first have to enable the Custom transactions numbers feature. After turning on this feature, each invoice that's added is recorded in chronological order resulting in uniform invoice numbers. Here's how to turn on this feature: 

1. Go to Settings ⚙ and select Account and settings.
2. Select Sales, then select anywhere within the Sales form content section.
3. Turn Custom transaction numbers on.
4. Select Save, then select Done.

If you'd like to learn more about how to set up a number preference for your invoice numbers, check out this article here. Let me know if this info helps. I'll be a message away in case you need additional assistance. Otherwise, I wish you a great rest of the week. 

Thanks for replying, but that doesn't help the issue. That feature is working against me, currently, and I don't think turning it off solves the issue but I'm not sure.

I hear you on this. Based on what you've described, I gather that QuickBooks is functioning the way it's programmed to function when using the invoice module. I suspect that the issue is arising between the integration of QBO and ServiceTrade. That being said, putting an invoice sequence would require you manually entering an invoice sequence and having QuickBooks use that as a starting point for the chronological order of future invoice sequences. For example, if I manually enter an invoice number 111, QuickBooks will automatically enter 112 on the next invoice I enter or import via a third-party app. 

But the import comes in with an invoice number already, and this invoice number from ServiceTrade overrides any attempt I make in QBO about QBO invoice number sequencing. Is there a way to stop that? I don't want invoices from ServiceTrade to affect QBO invoice number sequencing, so QBO could be S101, S102, etc. however I start that sequencing, and keep that cadence even if ServiceTrade pops in/generates an invoice with the number 12345678. Is there anything I can to so that in QBO, when a recurring action creates anew or I hit New+ Invoice, the invoice number is S103 and not 12345679?

Thanks for elaborating. I'd like to make sure you get a favourable resolution to this issue. From here, I recommend getting in touch with our support team so they can share your screen and have a visual reference of what you're seeing.  You can get in touch by dialing 1-855-253-1536 from Monday to Friday between the hours of 9 AM and 8 PM EST. In the meantime, feel free to ask other questions, I'm here to steer you in the right direction.