What is the best thing to gather before starting a Power Bi Project?

[blockobito]

What is the best thing to gather before starting a Power Bi Project?

Example: 

-Do we need to create a Flow Chart for the Datas needed for the visuals? 

[amitchandak · Accepted solution]

@blockobito , refer this from Microsoft https://learn.microsoft.com/en-us/power-bi/guidance/powerbi-implementation-planning-introduction