Reconcile restrict partner mismatch

This module adds a control on reconciliation of receivable and payable accounts so that all the journal items being matched together must share the same partner. If you try to reconcile items with different partners, or one item with a partner and another without, Odoo blocks the operation with an error message.

The rule is controlled by a company-level setting, available in Accounting settings under "Partners Mismatch Restriction on Reconcile". It can be switched off journal by journal: each journal form has a "Partner Mismatch on Reconcile" section with a checkbox to not restrict partner mismatch on that journal.

Because some reconciliations may already exist with mismatched partners, the module adds a report called "Reconciled items with partner mismatch", found in the Accounting menu under the entries section. It lists each partial reconciliation showing the debit and credit moves, their amounts, their partners, the account and the account type, so you can review and correct past cases.

The restriction only applies to receivable and payable account types; other accounts are not affected. The report is read-only and available to accounting users.