What information must invoices contain in order to be valid?

Invoices must contain specific information on what the payment is for to be considered valid. This requirement ensures transparency and clarity in the transaction between the buyer and the seller. Key details typically include a description of the goods or services provided, the quantity, the price, applicable taxes, and any discounts that may apply. By outlining this information, both parties can keep accurate financial records and ensure that payments are made under the correct terms.

Including such details helps prevent disputes and confusion over what the charges correspond to, which is pivotal for maintaining good business relationships. It also aids in proper accounting and auditing processes, as the specific nature of the transaction can be easily referenced for future inquiries.

The other options, while they may pertain to business operations, do not directly contribute to the validity of an invoice. Basic company details alone do not provide enough context for the payment, while customer feedback reports and supplier sales targets are unrelated to the specific transactional purpose of an invoice.