Reference

Command types

Reference for every fiscal command e-bon dispatches to your AMEF — request body, result shape, and what each command does on the device.

Command types

Every fiscal action your POS performs through e-bon — printing a receipt, opening the cash drawer, closing the day with a Z report — is dispatched as a typed command to a registered AMEF device.

This page is the per-type reference. For each command it lists the wire identifier you send in the request body, the JSON payload (when one is required), and what the device returns. Pair it with the Commands API page, which documents the HTTP envelope, polling, and idempotency.

Send a command

Every command type uses the same HTTP entry point:

POST /api/v1/devices/:deviceId/commands
Content-Type: application/json
Authorization: Bearer <api-key>

{
  "type": "print_receipt",
  "payload": { /* per-type body, see below */ }
}

A single API-key scope (commands) authorizes every command type listed on this page. See API keys for how to mint and rotate keys.

Command catalogue

The 27 command types, grouped by purpose:

Wire string	Category	Payload	Purpose
`print_receipt`	Receipts	required	Print a fiscal sale receipt.
`void_receipt`	Receipts	required	Void a previously emitted receipt by ID.
`print_reversal_receipt`	Receipts	required	Issue a storno (fiscal reversal).
`void_open_receipt`	Receipts	none	Cancel a receipt currently open on the device.
`print_duplicate`	Receipts	none	Reprint the last receipt as a non-fiscal duplicate.
`non_fiscal_receipt`	Receipts	required	Print a free-form non-fiscal slip.
`x_report`	Reports	none	Read mid-day totals without closing the day.
`z_report`	Reports	none	Close the fiscal day and write totals to fiscal memory.
`cash_in`	Cash	required	Register a cash deposit.
`cash_out`	Cash	required	Register a cash withdrawal.
`get_cash_amount`	Cash	none	Read the running cash balance.
`open_drawer`	Cash	none	Pulse the cash drawer open.
`set_datetime`	Configuration	optional	Set the device clock.
`set_logo`	Configuration	required	Upload a logo bitmap.
`delete_logo`	Configuration	none	Remove the configured logo.
`set_vat_rates`	Configuration	required	Configure the device's VAT rate table.
`set_header_footer`	Configuration	required	Replace the printed header and footer lines.
`set_operator`	Configuration	required	Add or replace a cashier identity.
`get_status`	Diagnostics	none	Read paper, cover, and error state.
`get_info`	Diagnostics	none	Read serial, firmware, and fiscal memory status.
`get_last_receipt_info`	Diagnostics	none	Read metadata of the last issued receipt.
`get_vat_rates`	Diagnostics	none	Read the configured VAT rate table.
`get_vat_capabilities`	Diagnostics	none	Read VAT rates supported by the firmware.
`get_header_footer_capabilities`	Diagnostics	none	Read header/footer line and width limits.
`get_header_footer`	Diagnostics	none	Read the configured header and footer.
`get_operator_capabilities`	Diagnostics	none	Read operator-slot count and password limits.
`raw_command`	Raw	passthrough	Send protocol-native bytes to the driver.

Receipts

Print a fiscal receipt

Print a fiscal sale receipt on the AMEF.

Type: print_receipt

{
  "items": [
    { "name": "Coffee", "quantity": 2, "price": 9.5, "vatRate": 21, "department": 1 }
  ],
  "payments": [
    { "type": "cash", "amount": 19.0 }
  ]
}

Field	Type	Required	Notes
`items`	array	yes	Must be non-empty.
`items[].name`	string	yes	Non-empty product name.
`items[].quantity`	number	yes	Strictly positive.
`items[].price`	number	yes	Unit price.
`items[].vatRate`	number	yes	One of `0`, `9`, `11`, `21` (Romanian VAT rates).
`items[].department`	number	no	Department index on the device.
`payments`	array	yes	Must be non-empty.
`payments[].type`	string	yes	One of `cash`, `card`, `voucher`, `other`.
`payments[].amount`	number	yes	Strictly positive.

The total of items (quantity × price) must equal the total of payments within 0.01.

On success: result.fiscalId carries the AMEF-assigned receipt ID. Driver-specific details land in result.data.

Void a receipt

Void a previously emitted fiscal receipt by its ID.

Type: void_receipt

{ "receiptId": "rcpt_01HZ..." }

Field	Type	Required	Notes
`receiptId`	string	yes	ID of the receipt to void.

Issue a fiscal reversal (storno)

Emit a Romanian storno that legally cancels an earlier sale and references the original receipt.

Type: print_reversal_receipt

{
  "uniqueSaleNumber": "USN-2026-000123",
  "originalReceiptNumber": "0000456",
  "originalReceiptDateTime": "2026-04-20T14:32:11Z",
  "fiscalMemorySerialNumber": "DY12345678",
  "originalZReportNumber": "12",
  "reason": "operator_error",
  "items": [
    { "name": "Coffee", "quantity": 1, "price": 9.5, "vatRate": 21 }
  ],
  "payments": [
    { "type": "cash", "amount": 9.5 }
  ]
}

Field	Type	Required	Notes
`uniqueSaleNumber`	string	yes	USN of the original sale.
`originalReceiptNumber`	string	yes	Receipt number to reverse.
`originalReceiptDateTime`	string	yes	Valid ISO-8601 timestamp.
`fiscalMemorySerialNumber`	string	yes	Serial of the original AMEF.
`originalZReportNumber`	string	no	Z-report number, if known.
`reason`	string	yes	One of `operator_error`, `refund`, `tax_base_reduction`.
`items`	array	yes	Same per-item rules as `print_receipt`.
`payments`	array	no	If present, follows the same rules as `print_receipt` and is balance-checked.

On success: the storno receipt's own fiscal ID is returned in result.fiscalId.

Cancel an open receipt

Cancel a receipt that is currently open on the device. Use this to reset state after a hardware or operator interruption.

Type: void_open_receipt — no payload.

Reprint the last receipt

Reprint the last receipt as a non-fiscal duplicate.

Type: print_duplicate — no payload.

Print a non-fiscal slip

Print a free-form, non-fiscal slip such as a pre-bill or loyalty notice. Non-fiscal prints do not write to fiscal memory and have no fiscal ID.

Type: non_fiscal_receipt

{
  "lines": ["Thanks for visiting", "See you soon!"],
  "header": "Loyalty receipt"
}

Field	Type	Required	Notes
`lines`	string	yes	Non-empty list of lines to print.
`header`	string	no	Optional header line.

Reports

Read an X report

Read mid-day totals without closing the fiscal day. Returns totals, VAT breakdown, and receipt count in result.data.

Type: x_report — no payload.

On success, e-bon also fires a report.generated webhook.

Close the day with a Z report

Close the fiscal day, freeze daily totals into fiscal memory, and reset daily counters.

Type: z_report — no payload.

On success, e-bon also fires a report.generated webhook.

Cash management

Register a cash deposit

Type: cash_in

{ "amount": 200, "description": "Opening float" }

Field	Type	Required	Notes
`amount`	number	yes	Strictly positive.
`description`	string	no	Free-text note.

Register a cash withdrawal

Type: cash_out

{ "amount": 50, "description": "Bank deposit" }

Read the cash balance

Read the running cash balance the device tracks for the drawer. Returns { cashBalance, currency } in result.data.

Type: get_cash_amount — no payload.

Open the cash drawer

Pulse the cash drawer open without printing anything.

Type: open_drawer — no payload.

Configuration

Set the device clock

Sync the device clock, optionally to a specific timestamp.

Type: set_datetime

{ "datetime": "2026-04-25T10:00:00Z" }

Field	Type	Required	Notes
`datetime`	string	no	If present, must be a valid ISO-8601 timestamp. If omitted, the device syncs to current server time.

Upload a logo

Upload a logo bitmap that the device prints at the top of receipts.

Type: set_logo

{ "logo": "iVBORw0KGgoAAAANSUhEUgAA..." }

Field	Type	Required	Notes
`logo`	string	yes	Base64-encoded bitmap.

Each AMEF firmware has its own size and format limits for logos. Check the device documentation before uploading large or unusual bitmaps.

Delete the logo

Remove the configured logo from the device.

Type: delete_logo — no payload.

Configure VAT rates

Configure the device's named VAT rate table (for example A → 21, B → 9).

Type: set_vat_rates

{
  "rates": [
    { "name": "A", "percentage": 21 },
    { "name": "B", "percentage": 9 }
  ]
}

Field	Type	Required	Notes
`rates`	array	yes	At least one entry.
`rates[].name`	string	yes	VAT slot name.
`rates[].percentage`	number	yes	Non-negative percentage.

Set the header and footer

Replace the lines printed at the top and bottom of every receipt.

Type: set_header_footer

{
  "header": ["My Coffee Shop SRL", "Bd. Magheru 12, București"],
  "footer": ["Thank you!", "www.example.ro"]
}

Field	Type	Required	Notes
`header`	string	yes	Header lines (may be an empty array).
`footer`	string	yes	Footer lines (may be an empty array).

Read the device's limits with get_header_footer_capabilities before pushing — line counts and character widths vary by firmware.

Configure an operator

Add or replace an operator slot (cashier identity) on the device.

Type: set_operator

{ "operatorId": 1, "name": "Maria", "password": "1234" }

Field	Type	Required	Notes
`operatorId`	number	yes	Integer ≥ 1.
`name`	string	yes	Operator name.
`password`	string	no	Optional password.

Read the device's limits with get_operator_capabilities first — slot count and password support vary by firmware.

Diagnostics

Read device status

Read the device's current operating status — paper, cover, fiscal-day state, and any errors.

Type: get_status — no payload.

Read device identity

Read the device serial number, firmware version, fiscal-memory status, manufacturer, and model.

Type: get_info — no payload.

Returns { serialNumber, firmwareVersion, fiscalMemoryStatus, manufacturer, model? } in result.data.

Read the last receipt

Read metadata of the last issued receipt.

Type: get_last_receipt_info — no payload.

Returns { receiptNumber, date, total, fiscalMemoryNumber? } in result.data.

Read configured VAT rates

Read the VAT rate table currently configured on the device.

Type: get_vat_rates — no payload.

Returns an array of { name, percentage } in result.data.

Read supported VAT rates

Read which VAT rates the device firmware accepts (the possible rates, not the configured ones).

Type: get_vat_capabilities — no payload.

Read header/footer limits

Read the device's header and footer limits.

Type: get_header_footer_capabilities — no payload.

Returns { maxHeaderLines, maxFooterLines, maxCharsPerLine } in result.data.

Read configured header and footer

Read the header and footer currently configured on the device.

Type: get_header_footer — no payload.

Returns { header: string[], footer: string[] } in result.data.

Read operator limits

Read the operator-slot count and password constraints supported by the firmware.

Type: get_operator_capabilities — no payload.

Returns { maxOperators, maxNameLength, maxPasswordLength, supportsPassword } in result.data.

Send a raw command

Driver-specific escape hatch for sending protocol-native bytes when no typed command exists. Whatever you pass in payload is forwarded straight to the device driver.

Type: raw_command

raw_command bypasses every payload check e-bon performs. Misuse can put a device into an unusable state or emit non-compliant fiscal output. Treat it as a debugging tool, not a production primitive.

Track a command result

Every command, regardless of type, moves through the same lifecycle. The status field on the command document takes one of six values:

Status	When you see it
`pending`	The API has accepted and persisted the command.
`sent`	The command is in flight to the device.
`processing`	The device has acknowledged and is working on it.
`completed`	The device returned success. `result.data` and (for receipt commands) `result.fiscalId` are populated.
`failed`	The device or dispatcher reported failure. `result.errorCode` and `result.errorMessage` are populated.
`timeout`	The device did not respond in time. `result.errorCode` is `E500` (`TimeoutCommand`).

The full result envelope is { success, data?, fiscalId?, errorCode?, errorMessage? }.

Where to next

Commands API — HTTP envelope, polling, and idempotency.
Commands SDK — typed wrappers around this catalogue.
Receipt emission flow — end-to-end pipeline.
Errors — errorCode values that surface in command results.
Glossary — USN, storno, AMEF, MF, X / Z reports.

Edit this page

Glossary

A→Z reference for the Romanian fiscal and e-bon terms used across these docs.

Status values in receipts, devices and webhooks

Reference for every status value e-bon returns in API responses, webhook payloads and the Portal — what each value means and when you'll see it.