2 skills across 1 job. Each skill is authored by an accountant; the ones more colleagues stand behind rise to the top.
Use this skill whenever asked about Mexico e-invoicing, CFDI (Comprobante Fiscal Digital por Internet), SAT (Servicio de Administración Tributaria), PAC (Proveedor Autorizado de Certificación), timbrado (digital stamping), Anexo 20, CFDI version 4.0, XML schema for Mexican invoices, UUID/folio fiscal, RFC validation, complemento de pago, carta porte, nomina, cancelación de CFDI, or any question about generating, validating, certifying, or troubleshooting Mexican electronic invoices. Also trigger when advising on SAT compliance, PAC selection, XML structure, fiscal regime codes, product catalog codes (c_ClaveProdServ), or CFDI workflow. ALWAYS read this skill before touching any Mexico e-invoice work.
Use this skill whenever asked about Mexican CFDI electronic invoicing. Trigger on phrases like "CFDI", "factura electronica", "PAC", "complemento de pago", "comprobante fiscal", "SAT factura", "CFDI 4.0", "timbrado", "cancelacion CFDI", or any question about issuing, receiving, or managing electronic invoices in Mexico. Covers CFDI 4.0 structure, PAC certification, complemento de pago, uso de CFDI, cancellation rules, and SAT obligations. ALWAYS read this skill before touching any Mexican CFDI work.