stipulation
noun
[ ˌstɪpjʊˈleɪʃn ]
• a condition or requirement that is specified or demanded as part of an agreement.
• "they donated their collection of prints with the stipulation that they never be publicly exhibited"
Similar:
condition,
precondition,
proviso,
provision,
prerequisite,
requisite,
specification,
demand,
requirement,
non-negotiable point,
rider,
caveat,
qualification,
clause,
terms,