The CLP procedure is a finite-domain constraint programming solver for constraint satisfaction problems (CSPs) with linear, logical, global, and scheduling constraints. In addition to having an expressive syntax for representing CSPs, the CLP procedure features powerful built-in consistency routines and constraint propagation algorithms, a choice of nondeterministic search strategies, and controls for guiding the search mechanism that enable you to solve a diverse array of combinatorial problems.
You can also solve standard constraint satisfaction problems via the constraint programming solver in PROC OPTMODEL. For more information, see the constraint programming solver chapter in SAS/OR User's Guide: Mathematical Programming.