Another Vertex Mismatch Question

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I'm getting a bunch of these errors and have read through this post and this post, but I'm not sure they apply or I'm misinterpreting them.

Here's the error:

   ** Severe  ** RoofCeiling:Detailed="95599E35-C04C-423A-93DB-0577DF06C426-000078B4", Vertex size mismatch between base surface :95599E35-C04C-423A-93DB-0577DF06C426-000078B4 and outside boundary surface: 95599E35-C04C-423A-93DB-0577DF06C426-000078B4 REVERSED
   **   ~~~   ** The vertex sizes are 4 for base surface and 6 for outside boundary surface. Please check inputs.

But the vertex size is what's getting me; what does size mean exactly? At first I assumed quantity, but both of these surfaces have 8 vertices (not 4 or 6 like the error message says), and they look pretty identical to me.

BuildingSurface:Detailed,
    95599e35-c04c-423a-93db-0577df06c426-000078b4,  !- Name
    Wall,                    !- Surface Type
    Basic Wall,              !- Construction Name
    a064c6df6,               !- Zone Name
    Surface,                 !- Outside Boundary Condition
    95599e35-c04c-423a-93db-0577df06c426-000078b4 Reversed,  !- Outside Boundary Condition Object
    NoSun,                   !- Sun Exposure
    NoWind,                  !- Wind Exposure
    ,                        !- View Factor to Ground
    ,                        !- Number of Vertices
    -80.2586, -58.022, 6.1,             !- X,Y,Z  1 {m}
    -80.2586, -58.022, 3.6,             !- X,Y,Z  2 {m}
    -80.5957, -58.9337, 3.6,            !- X,Y,Z  3 {m}
    -80.6471, -59.0725, 3.6,            !- X,Y,Z  4 {m}
    -80.6488, -59.0772, 3.6,            !- X,Y,Z  5 {m}
    -80.6488, -59.0772, 6.45,           !- X,Y,Z  6 {m}
    -80.5957, -58.9337, 6.45,           !- X,Y,Z  7 {m}
    -80.2586, -58.022, 6.45;            !- X,Y,Z  8 {m}

BuildingSurface:Detailed,
    95599e35-c04c-423a-93db-0577df06c426-000078b4 Reversed,  !- Name
    Wall,                    !- Surface Type
    Basic Wall,              !- Construction Name
    a1875716c,               !- Zone Name
    Surface,                 !- Outside Boundary Condition
    95599e35-c04c-423a-93db-0577df06c426-000078b4,  !- Outside Boundary Condition Object
    NoSun,                   !- Sun Exposure
    NoWind,                  !- Wind Exposure
    ,                        !- View Factor to Ground
    ,                        !- Number of Vertices
    -80.2586, -58.022, 6.45,            !- X,Y,Z  1 {m}
    -80.5957, -58.9337, 6.45,           !- X,Y,Z  2 {m}
    -80.6488, -59.0772, 6.45,           !- X,Y,Z  3 {m}
    -80.6488, -59.0772, 3.6,            !- X,Y,Z  4 {m}
    -80.6471, -59.0725, 3.6,            !- X,Y,Z  5 {m}
    -80.5957, -58.9337, 3.6,            !- X,Y,Z  6 {m}
    -80.2586, -58.022, 3.6,             !- X,Y,Z  7 {m}
    -80.2586, -58.022, 6.1;             !- X,Y,Z  8 {m}