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Check the remaining balance on an issued gift card.

Header Parameters

Acceptstring

Media type the client can parse. Always application/json for this API.

Default value
application/json
Enum values:
application/json
Authorizationstring

Body Parameters

transactionidstring Required

The giftcard-reference-id returned by the original issuance call.

currencystring

Defaults to GBP.

Min length
3
Max length
3
Pattern
^[A-Z]{3}$

Response

200
Object

Current gift card balance returned (from cache or a live call to the gift-card supplier).

Response Attributes

responseinteger

Echoes the HTTP status code.

available_balancenumber

Remaining balance on the gift card.

currencystring

ISO 4217 currency code.

Min length
3
Max length
3
Pattern
^[A-Z]{3}$
400
Object

Balance check unsupported for this brand, or the transaction ID was not recognised.

Response Attributes

messagestring

Human-readable failure reason. Safe to surface to integrators but not end-users.

errorstring

Alternative error message field used by a subset of endpoints (notably getToken and authentication failures). Integrators should check for both message and error when parsing failure responses.

responseinteger

Numeric status code echoing the HTTP status (e.g. 400, 401). Populated on most error paths; a few auth-layer failures omit it.

401
Object

Authentication failed. Common causes: missing Authorization header, malformed bearer token, token expired (tokens live 10 hours), or — on getToken itself — HMAC signature mismatch due to clock drift or wrong secret.

Response Attributes

messagestring

Human-readable failure reason. Safe to surface to integrators but not end-users.

errorstring

Alternative error message field used by a subset of endpoints (notably getToken and authentication failures). Integrators should check for both message and error when parsing failure responses.

responseinteger

Numeric status code echoing the HTTP status (e.g. 400, 401). Populated on most error paths; a few auth-layer failures omit it.

429
Object

Rate limit exceeded. The POST /getToken endpoint is rate-limited to five requests per minute per source IP; other endpoints may be throttled at the reverse-proxy layer in response to abusive traffic. Wait and retry with exponential backoff; the Retry-After header tells you the minimum wait in seconds.

Response Attributes

messagestring

Human-readable failure reason. Safe to surface to integrators but not end-users.

errorstring

Alternative error message field used by a subset of endpoints (notably getToken and authentication failures). Integrators should check for both message and error when parsing failure responses.

responseinteger

Numeric status code echoing the HTTP status (e.g. 400, 401). Populated on most error paths; a few auth-layer failures omit it.

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