Why is t2209 line 431 not the same amount as the foreign non business income amount that i entered from box 15 (converted to CAD) on the T5 slip?

[TurboTaxSusan]

T2209 line 431 is Non-business income tax paid to a foreign country. Box 15 on the T5 slip is (gross) Foreign income. They don't need to match, and usually won't.