Missing table(s) when upgrading from BC 16.5 to 25.15

cegekaJG

I am attempting to upgrade an on-premise instance of Business Central 16.5 to 25.15. However, when attempting to synchronize System Application, the following error occurs:

Table 4152 Temp Media :: The table 'Temp Media' cannot be located. Removing tables is not allowed unless they are temporary or are being moved by migration to another app.

The table in question is present in v16.5 but missing in the later version of System Application, but the official guide for upgrading on-premise Business Central makes no mention of adjusting for removed tables. This isn't listed in the known issues and the compatibility matrix for upgrades also states that I should be able to upgrade to any minor version of v25.

I've previously managed to upgrade other databases from v14 to v25 without issues, and using ForceSync during the upgrade process usually results in missing data, so I should be able to do this using the "Add" sync mode alone. Why am I encountering the error despite following the official guide, and how can I resolve it?

For clarification, since this is a preliminary test run, there are multiple optional Microsoft apps and third-party apps that I don't have prepared for now. I expect the upgrade to not be fully complete, but the guide does say that the required Microsoft extensions are the bare minimum, and the error I'm encountering should be independent from any other extensions.

cegekaJG

I've just run the upgrade using the demo database from 16.5 and can confirm the same error occurs. I'll try to first upgrade to 16.15, but according to the guide, this shouldn't be necessary in the first place, so I'm unsure if this will fix it.

Developer101

Please let us know go it goes