I have a fundamental query on transport package and layer.
Objects are classified in packages depending on the project and put in $TMP or test package else they are local ? Only objects belonging to a transport package can be transported , others are not ? How transport package is defined ? All objects must be a part of transport package else can not be transported ?
ABout transport layer, I understand this is used to define which path objects will take during transport particularly when there are multiple transport routes. But what are the advantages of it ? How we can define it (trx code/menu path) ?
Is it mandatory to use transport package and layers ?