Line descriptions shows as journal import created

Hello team, i have this issue on receivables module that my journal line description only show as Journal import created. I ve tried my hands on making a copy of the seeded SLAM, defining Journal line types and definitions to no avail. Please kindly help with step by step method to achieve this speciiying the specific modification i need to make around Application Account Definition, JLD and JLT if need be. Please referring me to documents may not be an option as this as already been initally logged with property manager module and i ve been given some guide but