Integrations: what connects
What is required, what is optional, and what the site cannot run without.
| What | Required | Why |
|---|---|---|
| SMS | Yes | Customers sign in with a code. Without it nobody can register. |
| Map | Yes | To choose a delivery address. |
| Online payment | No | Cash always works. A payment provider is an extra channel. |
| Telegram bot | No | A second channel: the mini app and notifications. |
| Till system (POS) | No | If you already run iiko/Poster. |
| PBX | No | If many orders come in by phone. |
| Fiscal receipts | If the law requires it | Filing the receipt with the state system. |
| Marking | If you sell drinks | Adding the DataMatrix code to the receipt. |
⚠Every key is stored in Settings and never returned: the screen only shows a «key saved» flag. Leaving a field blank and saving keeps the stored key — so that correcting one field does not quietly switch payments off.
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