Changelog

2026-08-21 · International Money Transfer v6.4.9. Date of birth requirements updated for sender and receiver; see the API reference. The same update was applied to the IMT v2 reference.

2026-08-20 · New API: Whish Pay Split (v1.0.0). Added a reference for POST /payment/whish/split, which collects a payment and records a breakdown of how it should be split across destination accounts, by amount (default) or by percentage. The request and response contract is final and safe to integrate against; redistribution of funds to each breakdown identifier is still being finalized, so until it ships the breakdown is captured and held against the payment and the full amount is collected as a standard Whish Pay payment.

2026-07-15 · Reference update. Added a payment & billing error-code reference (result codes, shared common codes, and per-endpoint failure codes) to Whish Pay, Bills, Variable Topup, Vouchers, and Direct Credit. Documented externalId as a String across the Whish environment. Noted that a localhost callback or redirect URL is rejected with HTTP 403. Aligned Whish Pay QR callbacks to HTTP POST with a JSON body. Updated the Whish sandbox base URL to partner.api.sbx.whish.money/itel-service/api. Live API versions were incremented; coming-soon APIs stay at their initial version until launch:

2026-07-13 · Initial published reference. First public revision of the Whish Money developer hub. Current version of each API (see each page's Version history for its full lineage):