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??_??0939
Participant
February 2, 2025
Question

UDIM is not applied.

  • February 2, 2025
  • 1 reply
  • 865 views

After using UDIM to unwrap UVs in Blender and importing the model into Substance Painter, the UDIM is not applied to the model. How can this be resolved?

Error message
・[Scene 3D] Errors have been found while splitting meshes per UV tile:
・Mesh 'RetopoFlow' has faces in out of bounds UDIM indices: [88,-33].

PC Specs
・OS　Windows 10 Pro 64-bit版
・CPU Intel Core i7-12700KF
GPU NVIDIA GeForce RTX 3060
・RAM 16GB

After using UDIM to unwrap UVs in Blender and importing the model into Substance Painter, the UDIM is not applied to the model. I have checked multiple times to ensure that the UVs are not overlapping across UV tiles, but I couldn't find any overlapping UVs. How can this issue be resolved?

1 reply

Cyril Dellenbach
Community Manager
Cyril DellenbachCommunity Manager
Community Manager
February 4, 2025

Hi @??_??0939,

 

Thank you for the message.

 

According to the error message, you have UVs hidden in negative space. If you're having trouble finding the problematic UV shell, you can send me the 3D object at cdellenbach@adobe.com with a link to this thread. I'll try to take a closer look as soon as I can.

 

Best regards,

 

Cyril Dellenbach (Micro) | QA Support Artist | Adobe
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??_??0939Author
Participant
February 9, 2025

Thank you for your reply. I have sent the model. I look forward to your response.

 

https://community.adobe.com/t5/substance-3d-painter-discussions/udim-is-not-applied/m-p/15131686#M8749:~:text=0-,UDIM%20is%20not%20applied.,-%3F%3F_%3F%3F0939

 

 

 

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