Issue a TE

The Electronic Ticket (TE) is the typical document for a sale to an end consumer: it doesn’t require identifying the recipient and is issued just as quickly as an FE. It’s used in POS, restaurants, retail, etc.

curl -X POST https://api.pos.lxsyscr.com/api/v1/facturas \
  -H "X-Api-Key: $LXS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "tipo": "TiqueteElectronico",
    "idUsuario": 7,
    "condicionVenta": "01",
    "medioPago": "06",
    "moneda": "CRC",
    "lineas": [
      { "idProducto": 200, "cantidad": 1 },
      { "idProducto": 201, "cantidad": 3 }
    ]
  }'

Note the absence of the cliente field: the TE doesn’t require identifying the recipient. If the customer later requests a named invoice, issue an additional FE and give them the NC for the original TE.