How can I fix this issue with my normal map?

Development Asset Creation
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1

When I apply my material instance to my landscape the normal map doesn’t seem to be working correctly.
In the preview for the material, material function and material instance the normal map appears correctly.(meaning I can see the bumps).
In fact I actually get these lines. (pictures) Any ideas? On my Material function not the pin though connected seems to be greyed out does anyone know why that might be or if its related to my normals appearing differently than the preview?

Thanks,
!

306816-clm-worldbuilding-materialfunctionlayer.jpg

2

Those lines are result of bad UV coordinates .find your normal map pin on material and trace from end to start and see which nodes change normal map textutre UV’s.