Custom classes - Java

We are in the process of implementing an upgrade in our Maximo Dev.

We are in the process of implementing an upgrade in our Maximo Dev. Environment. We are currently on version 7.6.1.0 (004) and going to 7.6.1.2 (014). This is one of the two issues we came across. We are a new support team with very limited knowledge and would very much appreciate any guidance.