fix: preserve UOM conversion factor precision in transactions

calculate_item_values rounds every Float field on an item row to the
site's Float Precision (3 by default), and conversion_factor was one of
them. The factor is a ratio, not a rate: UOM Conversion Factor.value is
stored at precision 9, and Material Request keeps the full value because
it has no currency field and so never runs the calculation.

Mapping a Material Request to a Purchase Order therefore truncated the
factor - 0.453592292 for Pound -> Kg became 0.454 - and stock_qty, which
is recomputed as qty * conversion_factor, drifted from the quantity that
was requested, leaving the Material Request unable to close.

Exclude conversion_factor from the rounded fields on the server and on
the client. Factors below the site precision would otherwise round to
zero outright.
This commit is contained in:
Mihir Kandoi
2026-07-31 21:53:59 +05:30
parent 7febc28ed6
commit 269cc6ee3b
3 changed files with 23 additions and 3 deletions

View File

@@ -466,7 +466,7 @@ class BuyingController(SubcontractingController):
self.precision("item_tax_amount", item),
)
self.round_floats_in(item)
self.round_floats_in(item, do_not_round_fields=["conversion_factor"])
if flt(item.conversion_factor) == 0.0:
item.conversion_factor = (
get_conversion_factor(item.item_code, item.uom).get("conversion_factor") or 1.0

View File

@@ -225,7 +225,12 @@ class calculate_taxes_and_totals:
if self.doc.get("is_consolidated") or self.discount_amount_applied:
return
do_not_round_fields = ["valuation_rate", "incoming_rate", "sales_incoming_rate"]
do_not_round_fields = [
"valuation_rate",
"incoming_rate",
"sales_incoming_rate",
"conversion_factor",
]
for item in self.doc.items:
self.doc.round_floats_in(item, do_not_round_fields=do_not_round_fields)
self.calculate_item_rate(item)

View File

@@ -143,11 +143,26 @@ erpnext.taxes_and_totals = class TaxesAndTotals extends erpnext.payments {
}
}
get_item_fields_to_round() {
const [item] = this.frm.doc.items || [];
if (!item) {
return [];
}
const do_not_round_fields = ["conversion_factor"];
return frappe.meta
.get_fieldnames(item.doctype, item.parent, {
fieldtype: ["in", ["Currency", "Float"]],
})
.filter((fieldname) => !do_not_round_fields.includes(fieldname));
}
calculate_item_values() {
var me = this;
if (!this.discount_amount_applied) {
const fields_to_round = this.get_item_fields_to_round();
for (const item of this.frm.doc.items || []) {
frappe.model.round_floats_in(item);
frappe.model.round_floats_in(item, fields_to_round);
item.net_rate = item.rate;
item.qty = item.qty === undefined ? (me.frm.doc.is_return ? -1 : 1) : item.qty;