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"Construction NONRES_ROOF of interzone surface CORE_ZN_CEILING does not have the same number of layers as the construction NONRES_ROOF_FLOOR of adjacent surface ATTIC_FLOOR_CORE"

This is telling you that constructions for two surfaces that connect between two zones do not have the number of material layers. They represent the same wall but just in the inverse direction. Not only should the number of layers be the same, but they should be an inverse of each other. Same material stack but just in reverse order. For symmetrical construction like interior wall the same construction can be used on both surfaces.

"Construction NONRES_ROOF of interzone surface CORE_ZN_CEILING does not have the same number of layers as the construction NONRES_ROOF_FLOOR of adjacent surface ATTIC_FLOOR_CORE"

This is telling you that constructions for two surfaces that connect between two zones do not have the same number of material layers. They represent the same wall but just in the inverse direction. Not only should the number of layers be the same, but they should be an inverse of each other. Same material stack but just in reverse order. For symmetrical construction like interior wall the same construction can be used on both surfaces.