INVOICE DATA VALIDATION RULES -GENERAL

1. Invoice Number Format:
   

   • Description: Ensures that the invoice number follows a specific format.

   • Example: The invoice number should be a combination of letters and numbers like INV-2021-001.

1. Date Validation:
   

   • Description: Verifies that the invoice date is a valid date and falls within an acceptable range.

   • Example: The invoice date must be in the format DD-MM-YYYY and should not be in the future.

1. Currency Validation:
   

   • Description: Checks that the currency used in the invoice is valid and consistent.

   • Example: The currency must be one of the accepted values (e.g., USD, EUR, GBP).

1. Customer Information Completeness:
   

   • Description: Ensures that all required customer information is provided.

   • Example: The invoice must contain the customer's name, address, contact details, etc.

1. Itemized Products/Services:
   

   • Description: Validates that the invoice includes a detailed list of products or services, each with a description and price.

   • Example: Each line item should include a product or service description, quantity, unit price, and total.

1. Quantity Validation:
   

   • Description: Checks that the quantity of each item is a positive integer.

   • Example: The quantity of items should not be negative or zero.

1. Unit Price and Total Calculation:
   

   • Description: Verifies that the unit price and total amount for each line item are calculated correctly.

   • Example: Unit price multiplied by quantity should equal the total amount for each item.

1. Tax and Discounts:
   

   • Description: Validates that tax percentages and discount amounts are within acceptable ranges.

   • Example: Tax rates should be between 0% and 100%, and discounts should not result in a negative total.

1. Total Amount Validation:
   

   • Description: Ensures that the total amount on the invoice is calculated correctly.

   • Example: The total amount should be the sum of all line item totals, plus any applicable taxes or discounts.

1. Payment Terms:
   

   • Description: Checks that the payment terms specified on the invoice are valid.

   • Example: The payment terms should be one of the accepted options (e.g., Net 30, Due on Receipt).

1. Duplicate Invoice Check:
   

   • Description: Verifies that the invoice number is unique and has not been used before.

   • Example: No two invoices should have the same invoice number.

These data validation rules help ensure that the invoice data is accurate, complete, and consistent, which is crucial for financial record-keeping and reporting. Keep in mind that these rules can be further customized based on specific business requirements.