Calculating YC Allocation indicates invalid combination of colors within a plating color YCA_147

Plating color ColorName contains an invalid combination of colors!
Combination of up to four different colors only is allowed.

    1
    Check and correct the plating color.

<!--Plating color contains an invalid combination of colors: {0}. Valid combinations: Between one and 4 non identical colors-->

<!--Dev: Plating color contains an invalid combination of colors: {0}. Valid combinations: Between one and 4 non identical colors-->

<Message Name="MSG_YCA_PtErrorWrongColorCombination" Id="0x34093" Type="Dynamic">

<Meta Sign="YCA" ErrorId="YCA_147" IsCritical="true" IsSelectionable="false" />

<Parameter Name="ColorName" Type="string" Description="Color Name" />

</Message>