Ensure that you have updated the contents of safbuilder.bat file as follows.
call mvn -DskipTests=true clean package
call mvn exec:java -Dexec.mainClass="safbuilder.BatchProcess" -Dexec.args="%1 %2"
echo "SAF Created"
Ensure that your present working directory is canged to parenet directory of safbuilder.bat file.
Also, while running the safbuilder.bat file, you need to provide the correct path of metadata csv file.