Field help (ITM2STA) 

The product status determines how its availability has evolved. The different statuses are: Active, In development, On shortage, Not renewed, Obsolete and Not usable.

During product creation, the default status is dependent on the creation method defined for the assigned product category:

Impact of the product status in the sales and purchase modules

Sales

Purchases

Use the status to change product availability. The titles in the local menu can be set up and managed as follows:

Non blocking and blocking messages according to the context and status: