Minimum Advertised Price (MAP) must be a positive value. For details, see http://sellercentral.amazon.co.uk/gp/help/24881
This error occurs when the Minimum Advertised Price (the MAP) value in your inventory file or price feed is invalid.
To be valid, your MAP value must be a positive value. For example, "3.00" is a valid value, but "-3.00" is invalid.
To resolve this error, please resubmit your data using an MAP value that is greater than zero.