running scripts

I get the following messages when I run a shell script

rssa001_automate.sh[83]: ^M: not found.
rssa001_automate.sh[85]: ^M: not found.
rssa001_automate.sh[87]: ^M: not found.
rssa001_automate.sh[89]: ^M: not found.
rssa001_automate.sh[90]: ^M: not found.

What do the numbers indicate and how to fix them?

thanks