Cause

Possibility 1

A part placement on a page of the "Panel layout" type disposes of a specific part number. No part number or a different part number was on the contrary assigned to the associated main function corresponding to the part placement.

Possibility 2

A part placement that disposes of a specific part number was inserted several times on a page of the "Panel layout" type. The associated main function on the schematic page corresponding to the part placement disposes of the same part number. However, it has a lower value with the property Number of units / quantity at the part than the number of part placements inserted on the page of the "Panel layout" type.

Solution

Regarding option 1

Enter the same part number at the part placement of the page of the "Panel layout" type and at the main function in the schematic.

Then start a new check run.

Regarding option 2

Adapt the entered value for the number of units / quantity in the part properties of the main function in the schematic to the number of the part placement inserted on the page of the "Panel layout" type. This means, either increase the value for the number of units / quantity at the main function, or delete the surplus part placements.

Then start a new check run.