# Invoicer > Invoicer · Facturación electrónica para el Perú. Comprobantes con XML firmado, envío a SUNAT y CDR; notas de crédito y débito con los motivos del catálogo; guías de remisión electrónicas; retenciones y percepciones; resúmenes diarios, bajas y reversiones; series y correlativos; certificado digital y Clave SOL; PDF con tu marca; venta al crédito con cuotas. > Invoicer · Electronic invoicing for Peru. Receipts with signed XML, submission to SUNAT and stored CDR; credit and debit notes with official catalogue reasons; electronic despatch guides; withholding and perception receipts; daily summaries, voids and reversals; series and sequence numbers; digital certificate and Clave SOL; branded PDF; credit sales with instalments. Invoicer is the SUNAT electronic invoicing engine by Dishub Technologies (https://dishub.city), for Peru only. It issues the twelve SUNAT document types: invoice (01), boleta (03), credit note (07), debit note (08), withholding receipt (20), perception receipt (40), sender despatch guide (09), carrier despatch guide (31), daily summary (RC), void communication (RA), reversal summary (RR) and batch (LT). Each receipt is serialised as UBL 2.1, signed as XML, sent to SUNAT and stored together with its CDR. It manages series and sequence numbers per document type, the digital certificate and Clave SOL per RUC and per environment (beta and production), the printed PDF with your own logo, colours and the SUNAT QR code, and credit sales with an instalment schedule (RS 000193-2020). Credit and debit note reasons come from SUNAT catalogues 09 and 10. Issuable currencies: PEN, USD, EUR. Prices are not published yet: the plans page shows the structure with placeholders and a person sets the amounts, each with its currency. ## Content (Spanish, canonical) - [Invoicer — sitio](https://invoicer-site.pages.dev/invoicer.md): todo el contenido del sitio en Markdown - [Legal](https://invoicer-site.pages.dev/legal): privacidad, términos, aviso legal ## Content (English) - [Invoicer — site](https://invoicer-site.pages.dev/en/invoicer.md): the whole site in Markdown - [Legal](https://invoicer-site.pages.dev/en/legal): privacy, terms, legal notice ## Modules - Electronic receipts: Signed XML, not exported; The CDR is stored; Taxes from the catalogue; Credit sales with instalments - Credit and debit notes: Catalogue reason, not free text; Mandatory reference; Its own series; In step with the rules - Electronic despatch guides: Both types; Its own series; Field by field; Same flow - Summaries, voids and batches: Daily summary (RC); Void communication (RA); Reversal (RR); Batch (LT) - Series, sequence numbers and credentials: A prefix per type; A number that never repeats; Certificate and Clave SOL; Beta before production - The PDF your customer sees: Your logo; One colour per type; SUNAT’s QR code; PDF, XML and CDR ## Optional - [Full text](https://invoicer-site.pages.dev/llms-full.txt): both languages, one file - [Structured data](https://invoicer-site.pages.dev/): JSON-LD SoftwareApplication in the page head