By default, Option Price Calculator uses English language for error messages.
These messages can be changed to your language of choice from:
Settings -> Miscellaneous Config -> Translations

Multi-select field errors
– Must select at least
– Must select exactly
– Must select between
General Errors
– Required fields missing
– Product not available
– all remaining stock is in your cart
Lookup Errors
– The minimum for
– The maximum for
– decimal points allowed
Misc words
– is
– and
– Only
We may add additional translations form time to time so it’s best to check this in the app