fix: send correct VAT amount to e-taxes instead of total with VAT

vat_18_percent_with_amount stores the total INCLUDING VAT (e.g. 118),
but the e-taxes API vat18 field expects just the tax amount (e.g. 18).
Also calculates net cost/pricePerUnit for VAT-inclusive pricing (ƏDV daxil 18%).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Ali 2026-04-01 13:50:19 +04:00
parent d3775786a3
commit 1121908352
1 changed files with 18 additions and 3 deletions

View File

@ -486,8 +486,23 @@ def build_invoice_payload(doc, serial_number):
for item in doc.items:
item_master = frappe.get_doc("Item", item.item_code)
# Get the pure VAT tax amount (not total with VAT)
vat_amount = item.vat_amount if hasattr(item, 'vat_amount') and item.vat_amount else 0
# Calculate net amount (without VAT) for cost field
# vat_18_percent_with_amount = total WITH VAT (e.g. 118 for net 100)
# For "ƏDV daxil 18%": item.amount already includes VAT, need to subtract
# For "ƏDV 18%": item.amount is net, formula still works (118 - 18 = 100)
if hasattr(item, 'vat_18_percent_with_amount') and item.vat_18_percent_with_amount:
net_amount = item.vat_18_percent_with_amount - vat_amount
else:
net_amount = item.amount
price_per_unit = net_amount / item.qty if item.qty else item.rate
# Map VAT fields to E-Taxes format
vat18 = item.vat_18_percent_with_amount if hasattr(item, 'vat_18_percent_with_amount') and item.vat_18_percent_with_amount else None
# vat18 must be the VAT tax amount only (e.g. 18), NOT total with VAT (e.g. 118)
vat18 = vat_amount if vat_amount > 0 else None
vat0 = item.vat_0_percent_with_amount if hasattr(item, 'vat_0_percent_with_amount') and item.vat_0_percent_with_amount else None
vat_free = item.vat_free_amount if hasattr(item, 'vat_free_amount') and item.vat_free_amount else None
exempt = item.amount_without_vat if hasattr(item, 'amount_without_vat') and item.amount_without_vat else None
@ -499,8 +514,8 @@ def build_invoice_payload(doc, serial_number):
"unit": item.uom, # Use UOM name as text
"unitCode": None, # Not required per user confirmation
"quantity": item.qty,
"pricePerUnit": item.rate,
"cost": item.amount,
"pricePerUnit": price_per_unit,
"cost": net_amount,
"exciseRate": None,
"excise": None,
"vat18": vat18,