I wanted to buy products with 3 decimal prices (Purchase) and read about using the Multi Currency settings for this. (Config>Currencies>EUR & USD>Rounding Precision).

Long story short, this did not solve my issue. Turns out I needed to be in Debug mode and Settings>Technical>DatabaseStructure>Decimal Precision.

I cannot revert the Rounding Precision back to 2 because the currencies affected have already been used in accounting entries. I've already tried Super User to override this, but no luck. How do I force this through? I'm OK with trying because almost all entries' 3rd decimal are just a 0 anyway.

Is there a consistent way to override these kinds of errors anyway? There have been other instances I'd want to ignore errors and just push on.

Thanks in advance!