This word is acceptable for play in the UK dictionary that is being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

v. arrange according to a system or reduce to a system

"But a royal decree, passed by King Abdullah in an effort to systemise the succession, has delegated authority for choosing future kings to a council made up of princes representing the founder's 35 branches."

order   

digest    codify   

systematise    systemic    systemized    systems