UK Declining method - Depreciation

SOLVED

Good day everyone

We have a customer in RSA with a company in the UK which requires the Declining method to depreciation assets. We have tried various methods (UD, AD etc) available in X3 but does not seem to provide exactly the calcs the user is looking for.

Can someone please indicate what setup is required for the Declining method is specifically in the UK market? It seems that the user is expecting to depreciate the assets over a never ending period where as all methods we have tried requires a set life span.

Any assistance will be highly appreciated.