June 19, 2025

Managing the Supplier/Customer Relationship

by Our content team
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There are three areas of financial management in which a business needs to have effective procedures when managing the supplier/customer relationship:

  1. Generating source documents to evidence financial transactions between the supplier and its customer.
  2. Having effective credit control policies to ensure that the business maintains a healthy cash flow position.
  3. Critical examination of the business bank account to ensure that cash flow statements show the true cash position of the business.

Source Documents

There are three types of source documents that are produced in relation to sales transactions between the customer and supplier for the purposes of record keeping:

  • purchase orders
  • invoices
  • credit notes

1. Purchase Orders

A purchase order is a document sent by the buyer to the seller when ordering goods or services. It contains the following information:

  • buyer’s purchase order reference number
  • description, quantity and code number of the goods
  • signature of the person authorizing the purchase
  • date of the order
Example Purchase order

2. Invoices

An invoice is a trading document, which is sent by the seller to the buyer, stating how much is owed by the buyer for a specified delivery of goods or services.

It should contain the following details:

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