What type of documentation supports purchases in SWLCAT?

Invoices and receipts are critical types of documentation that substantiate purchases in SWLCAT, as they provide a detailed record of the transactions completed. An invoice typically includes information regarding the purchased goods or services, the corresponding amounts, payment terms, and the seller's contact information, serving as an official request for payment. A receipt, on the other hand, acts as proof of payment, confirming that a transaction has been finalized.

Having both invoices and receipts creates a clear and verifiable trail for financial records, ensuring accountability and transparency in the purchasing process. This documentation is essential for financial audits, budget tracking, and maintaining proper inventory records.

While budget forecasts, contractual agreements, and informal quotes can provide context or assist in planning and decision-making, they do not serve the primary purpose of supporting actual purchase transactions in the same way that invoices and receipts do. Hence, invoices and receipts are regarded as the most authoritative forms of documentation for substantiating purchases within SWLCAT.