What is the difference between the conditions for obligation (shurūt al-wujūb) and the conditions for validity (shurūt as-ṣiḥḥah) in Hanbali Fiqh?

The conditions for validity are the matters upon which the legal validity of an act depends, such as the condition of purity for prayer. As for the conditions for obligation, they are the matters upon which the obligation of an act of worship upon the legally responsible individual depends, such as the requirement of Islam and freedom, and possessing the zakatable threshold for wealth for the obligation of zakat.