Error creating / extending a WebApplication

Scenario:
You got the following error while creating a new WebApplication or extending an existing Web Application.

Error : An object of the type Microsoft.SharePoint.Administration.SPWebApplicationProvisioningJobDefinition named "Provisioning " already exists under the parent Microsoft.SharePoint.Administration.SPWebService named "". Rename your object or delete the existing object.

Solution:
Run the below STSADM command on all the Web Servers and Application servers to make sure all the hanging Administrative jobs are finished.

Code:

stsadm -o execadmsvcjobs