ERP software knows math, or do they? Dynamics NAV can do simple arithmetic in a decimal field, eg. type “14*50+10” and the system will evaluate this to the correct result “710”. But if you start nesting your expression with parenthesis it gets a bit confused and tells you “Please specify a decimal or calculation expression”. In certain scenarios, you will require complex setups for eg. item pricing or salesperson commissions, that is defined by a formula with certain constants in it (read: other field values).

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