Before putting an idea in a backlog as a Product Backlog item, what are the steps you need to perform.

As a Product Owner, we should not out rightly reject any of ideas, nor can we accept all of them. Every idea that comes needs to be analysed. So ideation needs to be followed up with analysis. The analysis can be done in several ways like analysing through creating a prototype, working on pilot customers, based on experience etc. Based on the result of analysis, the idea should be added to the product backlog.