<Session instance path>: Unable to unlink temporary parameter file <parameter file name> with error <error number> <cause of error>.
The workflow was configured to run on a grid. The master service process distributed the session to a worker service process. The worker service process created a temporary parameter file in $PMTempDir, but it failed to delete the file.
On the worker node, grant permissions to delete a file in $PMTempDir for the Informatica Services account or the operating system user in the operating system profile, and verify that there is enough disk space. Or, manually delete the temporary parameter file from the $PMTempDir directory.