The ULC approved the original version of the Uniform Partnership Act in 1914 (UPA 1914). UPA 1914 underwent multiple revisions, with the current version being approved in 1997 (commonly referred to as RUPA or UPA 1997) and last amended in 2013. The ULC refers to each UPA version as "UPA [YEAR]," noting the year the NCCUSL approved it.
Each state can decide whether to:
Adopt the uniform language of RUPA.
Depart from the uniform language of RUPA and enact nonuniform provisions to their state partnership law.
All states except Louisiana adopted UPA (1914), and most states subsequently replaced UPA 1914 with some form of RUPA (see ULC: Enactment Map).