What is the tolerance threshold under the EU-Mexico?

The general tolerance is 10% of the ex-works value of the finished product.

EU-Mexico - HS 12

EU-Mexico Global Agreement (FTA part)

1 RegelnToleranz: 10%2000

1200-1299Oils seeds and oleaginous fruits; miscellaneous grains, seeds and fruit; industrial or medicinal plants; straw and fodder

Manufacture in which all the materials of chapter 12 used must be wholly obtained.