We have an asset with depreciation adjustment transactions created during life use. 

When disposing off the asset, system will always generate Depreciation adjustment to reverse the created ones, even we turn off all parameters relating 'Auto create Depreciation adjustment' from FA parameters and FA Book. 

That being said, as long as depreciation adjustment transactions exist during asset life, the same transaction type will be automatically created when disposing off the asset.

We need to prevent creating Depreciation adjustment automatically in this situation.