For distribution circuits there is an option to split the voltage drop limit between the distribution circuit and its final circuits. This split limit is not a regulation requirement but is set by the designer to warn him or her about circuits exceeding the specified voltage drop percentage value, allowing for finer control of the voltage drop across circuits. The software provides a warning when the voltage drop of the circuit is over the split limit set.

Recommendation to resolve the error:

Revise the conductor or set a higher voltage drop split limit for the particular circuit.