Get list of documents in Chestnyi Znak for a given product group. Returns document IDs, types, statuses, dates. Endpoint: GET /api/v4/true-api/doc/list

Get detailed information about a specific document by its ID. Endpoint: GET /api/v4/true-api/doc/{id}/info

Get list of marking codes (CIS) included in a document. Endpoint: GET /api/v4/true-api/doc/{id}/cises

Search for marking codes (CIS) by various criteria. Pass a JSON body with filter fields supported by the API. Endpoint: POST /api/v4/true-api/cises/search

Get public information about marking codes by list of CIS values. Returns status, owner, product details for each code. Endpoint: POST /api/v3/true-api/cises/info

Get product card information by GTIN code. Pass a JSON body with gtin or other product identifiers. Endpoint: POST /api/v4/true-api/product/info

Get marking code balance across all product groups for the current participant. Endpoint: GET /api/v3/true-api/elk/product-groups/balance/all

Get virtual warehouse balance (marking codes on hand) for a product group. Pass a JSON body with filter criteria. Endpoint: POST /api/v3/true-api/warehouse/balance

Check if a company is a registered participant in Chestnyi Znak by their INN (tax ID). Returns registration status and details for each INN. Endpoint: GET /api/v3/true-api/participants?inns={inns}

Get list of withdrawal receipts (sales/disposals of marking codes) for a product group. Endpoint: GET /api/v4/true-api/receipt/list