This could be due to a LOT of things. Unfortunately, it seems that 100% of all “cloud” software doesn’t even try to explain one error that a LOT of companies have a problem with.
SAP, to the best of my knowledge is generally LOCAL software. It is also expensive, and used for almost everything. Given that, it is likely behind a firewall, or protected in some way.
If all that is true, and you used the regular cloud service from snaplogic, it probably couldn’t reach and/or connect with the SAP instance, and that would explain this error very well. If that is the case, you have to find a way to allow snaplogic to connect, or go around, or have a groundplex(snaplogic can help you with that, and I don’t know the license specifics, etc…) installed internally(inside the company), etc… It is just the nature of the beast.