The Grain Millers Association of Zimbabwe (GMAZ) is accusing mainstream retailers of causing a shortage of mealie meal by refusing to pay for the product upfront and insisting on credit terms. GMAZ claims that millers are experiencing cash flow problems due to the Grain Marketing Board's policy of requiring full payment for grain in US dollars and local currency. The volatility of the local currency and the refusal of retailers to use the interbank exchange rate set by the Reserve Bank of Zimbabwe have compounded the problem. Despite the country having sufficient maize supplies and milling capacity, the issue of exchange rates and late payments by retailers are contributing to the accessibility and pricing issues of mealie meal.