overdetermined

Short definition from Wiktionary

Adjective

1. 1
   Having more constraints or causes than necessary to determine a solution or result.
2. 2
   Having more equations than variables.
3. 3
   Determined by multiple causes in such a way that any of the causes on its own would be sufficient to account for the effect.

Verb

1. 1
   simple past and past participle of overdetermine