# Company API Documentation

> Documentation for Company API

Fetch the complete documentation index at: https://pennylane.readme.io/llms.txt. Use this file to discover all available pages before exploring further. Append .md to any documentation page URL to get its markdown version.

## Changelog
- [New fields on Customer Invoice: `purchase_order_reference` and `sales_order_reference`](https://pennylane.readme.io/changelog/new-fields-on-customer-invoice-purchase_order_reference-and-sales_order_reference.md)
- [Automatically send to PA on customer e-invoice import](https://pennylane.readme.io/changelog/automatically-send-to-pa-on-customer-e-invoice-import.md)
- [Substance field on Products and Customer Invoice lines](https://pennylane.readme.io/changelog/substance-field-on-products-and-customer-invoice-lines.md)
- [New `import_source` field on Supplier Invoices endpoints](https://pennylane.readme.io/changelog/new-import_source-field-on-supplier-invoices-endpoints.md)
- [New `schematron_validation_status` field on Customer Invoices](https://pennylane.readme.io/changelog/new-schematron_validation_status-field-on-customer-invoices.md)
- [Original Supplier Invoice File Retrieval](https://pennylane.readme.io/changelog/original-supplier-invoice-file-retrieval.md)
- [Customer & Supplier Invoices — E-invoicing flow field and flow_id filter](https://pennylane.readme.io/changelog/customer-supplier-invoices-e-invoicing-flow-field-and-flow_id-filter.md)
- [Factur-X conversion on customer invoice import](https://pennylane.readme.io/changelog/factur-x-conversion-on-customer-invoice-import.md)
- [New endpoint: Send a customer e-invoice to PA](https://pennylane.readme.io/changelog/new-endpoint-send-a-customer-e-invoice-to-pa.md)
- [New paid field on Supplier Invoices endpoints](https://pennylane.readme.io/changelog/new-paid-field-on-supplier-invoices-endpoints.md)