Estimado GustavoCruz, creo que el problema es de formato.
Al mirar su archivo, veo que tiene una línea de más...
Código:
{
"number": 4,
"prefix": "FE",
"document_type_code": "01",
"operation_type_code": "10",
"resolution_number": 18764008153137,
"currency_type_code": "COP",
"date": "2020-12-07",
"time": "11:58:05",
"customer": {
"address": "Sincelejo - Sucre",
"identification_number": 806008394,
"dv": 7,
"organization_type_code": 2,
"identification_type_code": 31,
"merchant_registration": "No tiene",
"municipality_code": "13001",
"regime_type_code": "49",
"language_code": "es",
"country_code": "CO",
"tax_code": 1,
"phone": 6502525,
"name": "MUTUAL SER E.P.S-S",
"liability_type_code": "R-99-PN",
"email": "facturacion_electronica@mutualser.com"
},
"notes": [{
"text": "Paciente: RC 1100690156 - TABOADA CHIMA VICTOR ANDRES Atención No: 175002; Autorización No. 7067000126869; Contrato No. SICO"
}],
"payment_form": {
"payment_form_code": "2",
"payment_method_code": "ZZZ",
"payment_due_date": "2021-02-05",
"duration_measure": 60
},
"prepaid_payments": [{
"identifier": "Copago",
"paid_amount": 0
}],
"legal_monetary_totals": {
"line_extension_amount": 8240,
"tax_exclusive_amount": 0,
"tax_inclusive_amount": 8240,
"allowance_total_amount": 0,
"charge_total_amount": 0,
"payable_amount": 8240
},
"invoice_lines": [{
"unit_measure_code": "94",
"invoiced_quantity": 1,
"line_extension_amount": 8240,
"free_of_charge_indicator": false,
"description": "CONSULTA DE CONTROL O DE SEGUIMIENTO POR NUTRICION Y DIETETICA +",
"code": "890306",
"item_identification_type_code": "999",
"price_amount": 8240,
"base_quantity": 1
}]
}],
}
Saludos cordiales