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diff --git a/addons/product/models/decimal_precision.py b/addons/product/models/decimal_precision.py
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+++ b/addons/product/models/decimal_precision.py
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+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import api, models, tools, _
+from odoo.exceptions import ValidationError
+
+
+class DecimalPrecision(models.Model):
+    _inherit = 'decimal.precision'
+
+    @api.constrains('digits')
+    def _check_main_currency_rounding(self):
+        if any(precision.name == 'Account' and
+                tools.float_compare(self.env.company.currency_id.rounding, 10 ** - precision.digits, precision_digits=6) == -1
+                for precision in self):
+            raise ValidationError(_("You cannot define the decimal precision of 'Account' as greater than the rounding factor of the company's main currency"))
+        return True
+
+    @api.onchange('digits')
+    def _onchange_digits(self):
+        if self.name != "Product Unit of Measure":  # precision_get() relies on this name
+            return
+        # We are changing the precision of UOM fields; check whether the
+        # precision is equal or higher than existing units of measure.
+        rounding = 1.0 / 10.0**self.digits
+        dangerous_uom = self.env['uom.uom'].search([('rounding', '<', rounding)])
+        if dangerous_uom:
+            uom_descriptions = [
+                " - %s (id=%s, precision=%s)" % (uom.name, uom.id, uom.rounding)
+                for uom in dangerous_uom
+            ]
+            return {'warning': {
+                'title': _('Warning!'),
+                'message': _(
+                    "You are setting a Decimal Accuracy less precise than the UOMs:\n"
+                    "%s\n"
+                    "This may cause inconsistencies in computations.\n"
+                    "Please increase the rounding of those units of measure, or the digits of this Decimal Accuracy."
+                 ) % ('\n'.join(uom_descriptions)),
+            }}