Sending invoices details to SII

Invoices details generated in LSP must be sent to SII through Web Services Gateway.

The CAF file and other documents are .xml files containing the range of invoice numbers (folios) that have been registered with Sii. All invoices sent to Sii must be in the range contained in the CAF file.

There is at least one CAF file per invoice type (invoice, credit note, export invoice, export debit note etc.). The administration of the folios between branches is the responsibility of the taxpayer. For example, 1000 folios are obtained and you decide to distribute them among several branches, the CAF will be the same and you must put controls in place to ensure that the folios is not duplicated across branches.

On the other hand, because you can make several requests for folios and obtain several CAFs, each associated with different ranges of folios, it may be preferable to order folios by branch, thus avoiding distributing a single range and allowing each branch to have its own private key.

For example: a taxpayer requests 1000 numbers for the issuance of electronic domestic invoices, and is granted numbers from 501 to 1500.

The tax payer must then create electronic invoices in the range 501 to 1500, which are electronically stamped using the private key in the CAF file designated to domestic Invoices.

The taxpayer then requests 500 numbers for the issuance of credit notes, and is granted numbers from 201 to 700.

The tax payer must then create credit notes in the range 201 to 700, which are electronically stamped using the private key in the CAF file designated to credit notes.

Cryptography is also required for this service. This is automatically setup in cloud. To set up the on-premise environment, see Localization cryptography service setup for on-premise.