SWF_ADM_SWWWIDH (Restart Suspended Deadlines) is a standard SAP transaction code available within R/3 SAP systems depending on your version and release level.
Below for your convenience is a few details about this tcode including any standard documentation available. In-order to use this transaction within your SAP system simply enter it into the command input box located in the top left hand corner and press enter. Here are a few additional command options available to use when doing this.
SAP Menu->Tools->ABAP Workbench->Development->SAP Business Workflow->Administration->Workflow Runtime->Restart Suspended Deadline Callbacks
SAP Menu->Tools->Business Workflow->Development->Administration->Workflow Runtime->Restart Suspended Deadline Callbacks
For futher details and documentation see program RSWF_ADM_SWWWIDH.