What is the meaning of this message and how to solve

when i click on any asset give this message box what is the meaning of this message and how to solve

@Rahul7218 It clear that you don’t have a Depreciation account set up. Could you please show me the configuration of the category for this asset?

@Rahul7218 , please set one of the three fields in the Asset Category Doctype to resolve your issue.

@Meet done thank you