Currently, the system does not allow the use of prepayment percentages on purchase orders when the purchase line contains non-deductible VAT. This creates a limitation for many businesses, particularly in the West African region, where VAT is often non-deductible and added to the cost of goods or services. In many cases, these purchases also require prepayment agreements before the goods are delivered or services are rendered, but the system restriction prevents organizations from applying prepayments in such scenarios.

It is recommended that the system allow prepayment percentages on purchase orders regardless of the VAT deductibility status. Supporting this functionality would enable organizations to properly manage advance payment arrangements while correctly incorporating non-deductible VAT into the cost of purchases, aligning the system with common procurement practices in many jurisdictions.