Square Warning: Location Id Mismatch
This can be displayed during a sync when the Square Authorized Location in SuitePOS does not match the Square Location in POS Settings. This normally occurs when you update the Square Location in POS Settings but have not re-authorized Square. This should be corrected as soon as possible to avoid transactions being posted to the wrong Square Location in the Square back-end.
You will need to Re-Authorize Square (by doing a manual sync) and then re-connect the Square Reader (just in case).