# "Err border element not in mesh" importing 3D mesh from gmsh **URL:** \ **Category:** General Discussion\ **Created:** [November 10, 2021, 11:36am UTC](https://community.freefem.org/t/err-border-element-not-in-mesh-importing-3d-mesh-from-gmsh/1317 "2021-11-10T11:36:28Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![ruffi92](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/ruffi92/32/921_2.png) [@ruffi92](https://community.freefem.org/u/ruffi92)\ **Post date:** [November 10, 2021, 11:36am UTC](https://community.freefem.org/t/err-border-element-not-in-mesh-importing-3d-mesh-from-gmsh/1317/1 "2021-11-10T11:36:28Z")
Hi to all, i’m trying to import a 3D mesh .msh from gmsh 2.2 to FreeFem++ but i receive the following error: Loading packages… 916619 vertices closing file 5196967 4972572 5196967 tetrahedrons 4972572 triangles 10169539 numElements – GMesh3 , n V: 916619 , n Elm: 5196967 , n B Elm: 4972572mes 0.193817 150.574 , bb: (-0.85656 0.383135 0.122828) , (-0.33292 0.906775 1.02283) Err Border element not in mesh 3 : 0 1 676596 4 : 0 2 28 7 : 0 26 28 9 : 0 26 230 15 : 0 230 676671 16 : 0 676596 676597 17 : 0 676597 676671 19 : 1 3 29 20 : 1 3 225974 – warning true boundary element 4680679 is no in correct orientation – warning true boundary element 4942052 is no in correct orientation Warning change orientation of 2 faces Warning error in boundary oriention 2 faces current line = 19 Assertion fail : (err==0) line :1008, in file …/femlib/GenericMesh.hpp ~HashTable: Cas moyen : 5.22306 Assertion fail : (err==0) line :1008, in file …/femlib/GenericMesh.hpp err code 6 , mpirank 0 close MUMPS\_SEQ: MPI\_Finalize How can i solve this issue? Thanks in advance to all ---
**Author:** ![marcodeba](https://avatars.discourse-cdn.com/v4/letter/m/977dab/32.png) [@marcodeba](https://community.freefem.org/u/marcodeba)\ **Post date:** [November 11, 2021, 7:26am UTC](https://community.freefem.org/t/err-border-element-not-in-mesh-importing-3d-mesh-from-gmsh/1317/2 "2021-11-11T07:26:40Z")
Hi! I’m not fully sure of what the error message stands for, but I can read for sure "boundary element (…) is no in correct orientation. I often had that kind of error and I solved it including the mesh loading between this two code lines: ```auto lockOrientation = false; mesh3 Th = readmesh3("meshname.mesh"); lockOrientation = true; ``` I hope that this could help! btw the gmsh version you are mentioning is pretty old, maybe passing to the last release may help too! I really hope that this will help you. Yours sincerely, Marco ---
**Author:** ![ruffi92](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/ruffi92/32/921_2.png) [@ruffi92](https://community.freefem.org/u/ruffi92)\ **Post date:** [November 11, 2021, 9:29am UTC](https://community.freefem.org/t/err-border-element-not-in-mesh-importing-3d-mesh-from-gmsh/1317/3 "2021-11-11T09:29:29Z")
unfortunatly this instruction had no effect, the bad orientation remain. Thanks anyway for the help!