Accounting Information Systems 7th Edition by Cynthia Heagy,Constance Lehmann

Exercise 4

A vendor account on the books of Pannell Partnerships is reproduced below:
Wichita Suppliers

Required:
Comment on your ability to trace the different types of entries in the above account to source entries in Pannell's journals using the reference identifiers given. Which of the reference identifiers are for documents prepared by Pannell? By Wichita Suppliers? What suggestions do you have to improve the quality of the audit trail?