western-union · Rate Limits

Western Union Rate Limits

Western Union's API rate limits are not publicly documented. Limits, burst behavior, and headers are configured per partner integration in the Mass Payments / Open Banking onboarding kit. Documented batch limits exist for Mass Payments (e.g., 10,000 payments per batch) but no public per-second / per-minute throttle is published.

Western Union Rate Limits is the machine-readable rate-limit profile for western-union on the APIs.io network, conforming to the API Commons Rate Limits specification.

It captures 2 rate-limit definitions, measuring payments_per_batch and varies.

The profile also includes 2 backoff/retry policies defined and response codes documented for throttled.

Tagged areas include Money Transfer, Payments, Rate Limiting, and Contact Sales.

2 Limits Throttle: 429
Money TransferPaymentsRate LimitingContact Sales

Limits

Mass Payments Batch Size account
payments_per_batch
10000
Per partner-published Mass Payments brief - up to 10,000 international payments per submitted batch. Not a request-rate limit.
Per-Partner Request Rate contract
varies
see partner agreement
Per-second / per-minute thresholds are agreed per partner; not publicly documented.

Policies

mTLS-Scoped Throttling
Limits attach to the mTLS client certificate / partner identity issued during onboarding; rotate or replace certs through partner support.
Backoff
Use exponential backoff with jitter on 429 / 503; honor Retry-After when present.

Sources