When Michael Jordan returns to play for The Bulls as number 45, there is a shot of him making a slam dunk where the number on his shirt is 23, his old number.
The uniforms that the Bulls, other NBA teams and High School and College teams are in fact wrong as the teams are wearing the 90's era "baggy" shorts. It was until the early 90's that basketball teams (professional and amateur) starting wearing the baggier shorts.
While playing at North Carolina, Michael Jordan is wearing late 90's era Nike tennis shoes. In college and on the 1984 Olympic team, Jordan and his teammates wore The Converse Weapon.
Because the film lacked to get the NBA and NCAA license, all uniforms are wrong as when Jordan first broke into the league in 1984 the Bulls Away uniform said "Chicago" in cursive.
Michael Jordan and his teammates are drinking the present day (1990's) plastic bottles of Gatorade which didn't exist in the 80's as all Gatorade bottles where still made of glass until the mid 1990's.
The labels on the Coke/Sprite/Wheaties/Miller Beer are all from the late 1990's models.
Coke machines have the modern Coke logo instead of the correct 1970's-1980's logo.