Edit error messages?

I have the Shopify-Netsuite integration, but I'm curious if there's a way to edit the error messages. For instance, when an order fails to import, it sends me an email with the shopify order id. That's good, so that I can look it up in Shopify, but I would ALSO have the Shopify order number, so that I can check in Netsuite if the order is there after all.
It saves a few steps on my end to check if the order went through afterwards or not...

Is this possible? (to edit the error message) And if so, how?

That's currently not possible with the IAs and is a little tricky even on custom flows. To do it on custom flows, you'd need to use a postSubmit script.
https://docs.celigo.com/hc/en-us/articles/20228312523931-JavaScript-hooks#postsubmit-4

Pity, but thanks for the heads up!