IB Plugin error 163 The order price entered is outside the allowable range

error code link to api IB broker

163 The price specified would violate the percentage constraint specified in the default order settings. The order price entered is outside the allowable range specified in the Order Precautionary Settings of TWS or IB Gateway

I get 163 error when I enter eurusd or gbpusd in forex symbol....i looked for the code in IB site...link above
does this have to do with decmal points its more than 3 digits after point....if so where do i change the setting ...or the error code meaning something else?.
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just trying to backfill no order...

GBP.USD-IDEALPRO-CASH 163 error
EUR.USD-IDEALPRO-CASH 163 error ...... but USD.JPY-IDEALPRO-CASH works

Thanks

update fixed
I changed preferences>Misce> to 5digit decimal and checked API forex compability integer units..now works