> For the complete documentation index, see [llms.txt](https://apidocs.akinon.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://apidocs.akinon.com/commerce-openapis/dynamic-bin-scheduler/pre-order/assign-saved-card-tappay-token-to-basket.md).

# Assign saved card (TapPay token) to basket

Assigns a saved TapPay card to a basket and returns eligible promotion activations.

**Flow:**

1. Validates token format (`{card_id}||{customer_id}`). Invalid format → returns `[]`.
2. Extracts BIN-6 from `masked_card_number[:6]`.
3. Checks for matching active promotions. No match → clears PreOrder, returns `[]`.
4. Calls TapPay API to resolve the full card (bin\_6, fingerprint).
5. Validates TapPay BIN matches `masked_card_number` prefix. Mismatch → returns `[]`.
6. Creates or updates `PreOrder` and recreates `PreOrderCall` records.

**Token format:** `{card_id}||{customer_id}`, e.g. `"card_E6VV262511||cus_TS03A272"`.

```json
{"openapi":"3.0.3","info":{"title":"Bankaci API","version":"1.0.0"},"tags":[{"name":"PreOrder","description":"Assign a card to a basket and retrieve eligible promotion activations"}],"servers":[{"url":"{BASE_URL}/api/v1","description":"Bankaci API","variables":{"BASE_URL":{"default":"https://your-bankaci-instance.example.com","description":"Base URL of the Bankaci service"}}}],"paths":{"/preorder/saved_card/":{"post":{"tags":["PreOrder"],"summary":"Assign saved card (TapPay token) to basket","description":"Assigns a saved TapPay card to a basket and returns eligible promotion activations.\n\n**Flow:**\n1. Validates token format (`{card_id}||{customer_id}`). Invalid format → returns `[]`.\n2. Extracts BIN-6 from `masked_card_number[:6]`.\n3. Checks for matching active promotions. No match → clears PreOrder, returns `[]`.\n4. Calls TapPay API to resolve the full card (bin_6, fingerprint).\n5. Validates TapPay BIN matches `masked_card_number` prefix. Mismatch → returns `[]`.\n6. Creates or updates `PreOrder` and recreates `PreOrderCall` records.\n\n**Token format:** `{card_id}||{customer_id}`, e.g. `\"card_E6VV262511||cus_TS03A272\"`.\n","requestBody":{"required":true,"content":{"application/json":{"schema":{"$ref":"#/components/schemas/PreorderSavedCardRequest"}}}},"responses":{"200":{"description":"Eligible promotion activations","content":{"application/json":{"schema":{"$ref":"#/components/schemas/BasketOfferResponse"}}}},"422":{"description":"Validation error","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ValidationError"}}}}}}}},"components":{"schemas":{"PreorderSavedCardRequest":{"type":"object","required":["card_token","masked_card_number","basket_id","basket_modified_date"],"properties":{"card_token":{"type":"string","description":"TapPay card token in the format `{card_id}||{customer_id}`"},"masked_card_number":{"type":"string","description":"Masked card number. Minimum 6 characters. The first 6 characters are used as\nthe BIN-6 prefix for promotion matching. Must match the BIN returned by TapPay.\n","minLength":6},"basket_id":{"type":"integer","description":"Omnitron basket ID"},"basket_modified_date":{"type":"string","format":"date-time","description":"Last modification timestamp of the basket (ISO 8601)"},"currency":{"$ref":"#/components/schemas/CurrencyType"}}},"CurrencyType":{"type":"string","enum":["try","eur","usd","egp","gbp","mad","pln","sar","ron","uah","czk","huf","rub","bgn","iqd","kwd","bhd","omr","qar","aed","ngn","inr","lei","kzt","jod","rsd"],"description":"ISO 4217 currency codes supported by Bankaci"},"BasketOfferResponse":{"type":"object","properties":{"basket_offers":{"type":"array","items":{"$ref":"#/components/schemas/BasketOfferItem"},"description":"Basket offer activations eligible for this card/basket combination.\nEmpty array when no promotions match the card BIN.\n"}}},"BasketOfferItem":{"type":"object","properties":{"basket_offer_id":{"type":"integer","description":"Omnitron BasketOffer ID to activate for this basket"},"session_code":{"type":"string","format":"uuid","description":"Unique session UUID linking this activation to its `PreOrderCall` record.\nUsed internally for usage verification.\n"}}},"ValidationError":{"type":"object","properties":{"detail":{"type":"array","items":{"type":"object","properties":{"loc":{"type":"array","items":{"type":"string"}},"msg":{"type":"string"},"type":{"type":"string"}}}}}}}}}
```


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