HELP: Vlookup using multiple criteria to check values

Hi Guys,

Have spent ages on this to no avail. Need the attached sheet to verfiy the values in the "Reconciliation" are correct when referencing the "Prices" sheet. I need column F (Reconciliation sheet) to lookup the "Code" in column B in the "Prices" sheet and then further look up the "Payment Frequency" (column D in the Reconciliation sheet) in the "Prices" sheet to verify that the price is correct.

Due to slight decimal point issues, if the value has a greater than 0.02 difference then display "ERROR" otherwise 0.

Thanks a thousand times over,
Jason.