This error can occur if there's a delay in the system in recognizing the payment options. This delay is usually caused by piled-up cache. Though, they boost browser's background processes.
We can do a few troubleshooting steps to get rid of the error. Here's how:
Open a private window and access your QBO account. It uses, but doesn't save the cache.
If you can edit the invoice without receiving the error, we can go back to your regular browser and clear the cache.
Other supported browsers are also good alternatives. Each of them uses different cache.
From there, you can continue creating or editing the invoices. Have a great day!
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