The field can have a maximum of 2 decimal places

In purchase order line in direct unit cost, The system would not  accept 3 decimal places.

The following message appears.

Ex : "Your entry of 28.118 is not an acceptable value  for 'Direct Unit Cost Excl.VAT'. The field can have a maximum of 2 decimal places."

In General Ledger Setup .

Amount Decimal Places  = 2:3

Unit Amount Decimal Places = 2:3

Version : NAV 2013 R2 (7.10.35473)

Please Help.