Which course is better among SAP and CBAP?

Both courses are very much in demand. As per me, you can do CBAP certification course because this is world's most recognized certification in the world. Business analysis is a rapidly growing profession and getting yourself certified for CCBA/CBAP will provide many benefits.

SAP is a very crowded place. It is difficult to get a break as SAP functional consultant easily. If you have management degrees such as BBA or MBA and have domain experience in fields such as healthcare, BFSI, travel& transportation, SCM, education, etc. then Certified Business Analysis Professional