[Pandiyan5273]

Issue

• Creating a Dunning for a partially paid foreign-currency Sales Invoice fails because the mapper copies the unchanged Payment Schedule amount while validation uses the recalculated unpaid balance.
• Backport of fix(accounts): map recalculated balances for Dunning #64585, adapted to the existing v16 Sales Invoice controller.

Closes #64629.

Steps to replicate

• Use a USD company and enable “Allow multi-currency invoices against single party account” in Accounts Settings.
• Create a customer with EUR billing currency and no party account, so the receivable account uses USD.
• Submit an overdue EUR 1,000 Sales Invoice at exchange rate 1.1, without a Payment Terms Template.
• Submit a Payment Entry allocating USD 550 to the invoice without allocating it to a payment term.
• Select Create > Dunning on the invoice. The same failure occurs with two installments when payment-term allocation is disabled.

Actual behavior

• The mapper copies EUR 1,000, but validation permits only the remaining EUR 500 and rejects the Dunning.

Expected behavior

• Create and submit the Dunning for the remaining EUR 500, retaining only unpaid installments and using their balances for interest calculation.

No-docs

[mergify]

Queue requested — the merge queue status continues in this comment ↓.

[mergify]

✅ Merged into version-16-hotfix as 790c411 at 08:16 UTC

39 min in the queue, 27 min of it CI.

So far

• ✅ Entered the queue Tue 10 Nov, 07:37 · rule default · triggered by @Pandiyan5273 with the merge queue checkbox
• ✅ Passed · draft merge queue: merged #65273: fix(accounts): map recalculated Dunning balances (v16) #65277
• ✅ Merged 08:16 · 790c411 · merge

3 merge conditions met

• #review-threads-unresolved = 0 · required by GitHub branch protection
• github-review-approved · required by GitHub branch protection
• any of:
  • all of:
    • check-success=Patch Test
    • check-success=Python Unit Tests (1)
    • check-success=Python Unit Tests (2)
    • check-success=Python Unit Tests (3)
    • check-success=Python Unit Tests (4)
  • -files~=^(?!erpnext/locale/main\.pot$)

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