Inconsistencies occur frequently in business writing. Some are obvious, such as using two different formats for a date, but other types are harder to detect.
Inconsistencies fall into four main categories: 1) Treating similar things differently, 2) Conveying unintentional bias, 3) Making sequencing errors, resulting in illogical order, and 4) Overlooking contradictory information, such as in math calculations, facts, dates, and source documents.
It is important to proofread carefully to spot inconsistencies. Your supervisor will rely on you to catch inconsistencies and demonstrate that you pay attention to detail and take pride in the work that you do.