It is hard to determine the exact land use change emissions of a product.
But if no deforestation/land use change has happened in the last 20 year, no land use change emissions need to be considered.
There are 2 ways to prove/certify that no land use change has happened in last 20 year: mass-based certifications (which are not necessarily or probably not for the exact product that you bought, but they show that somebody grew this product without land use change) and segregated certification (which really shows where your product comes from.
Are both of these sufficient to show no land use change?
My feeling is mass-based certification is not sufficient. But i can nog find anything about it in the GHG-protocol Agricultural Guidance, the SBTi FLAG guidance or on the Accountability Framewok Initiative.