career portal candidate already exists how to change label 'process completed'? to 'error'

Summary

career portal candidate already exists how to change label 'process completed'? to 'error'

Content

Hello,

We would like in case of candidate already exists in the system , to not only have the message below of “candidate already exists” but also change in this case the text “process completed” to “Error”- only in case candidate already exists. 

I tried to use the to change the text but if we change the ‘process completed’ it will change to all candidates also when entering a new candidate.  I tried view  career section administration - > application flow - > job submission internal - > 'Thank You' -