# Numbers to remember

| What | Value |
|---|---|
| GA waits for one wallet call | 5 seconds |
| Quick attempts on "no answer" | up to 4, spaced 100 ms, 500 ms, 2 s, inside an 8 s budget per bet (a silent wallet gets 2) |
| Background resend of a credit, rollback, or grant settlement | up to 72 hours, backoff 1 s doubling to a 10-minute cap |
| `Retry-After` honoured up to | 10 seconds inside the quick attempts |
| Signature clock window, both directions | ±300 seconds |
| GA outbound IPs | `49.13.169.177`, `46.224.156.1` (sandbox). `49.13.169.177` (production) |
| Keep `op_id` records for | 4 months |
| Game session lifetime | 24 hours |
| Money `exponent` | 0 to 18, from the message. GA sends 2 or more |
| Catalog page size | 50 by default, 500 maximum |
| Wallet HMAC secret shown | once, at rotation in the Operator Portal |
| Certification checks | 55, of which 6 are money-path checks |