What value did you set for the property ??OAM_Identity_Server.DC_DirOpt??
The value is sets to /opt/DP
I guess there are couple of problems here
1. The RSCD agent user mapping on your unix box is not allowing you to execute the command
2. Your parameter value is not getting passed through.
On the end target box, where you executed this BLPackage Deploy Job, look into Transaction logs.
Is that a custom property?
Did you set an instance for the target server?