For future references if anyone else ever is going to need the same solution, here is a solution provided by Dell support.

Running this in the script console will create a dynamic service from a vApp defined in the script.

 

vAppName = 'Insert Your vApp name here';             //vApp Name                                                           

serviceName = "VCD_vApp_"+vAppName;                         //This is the creating service name

toMerge = [];

 

ts = server.get("TopologyService");

 

// Create Category

categoryType = ts.getType("FSMCategory"); vCat = ts.getObjectShell(categoryType); vCat.setName("Cloud"); toMerge << vCat;

 

// Create Service

serviceType = ts.getType("FSMService"); vServ = ts.getObjectShell(serviceType); vServ.setName(serviceName); def domainsProperty = vServ.getType().getProperty("domainAssociationIDs");

vServ.markOverridingProperty(domainsProperty);

def domainsList = vServ.get("domainAssociationIDs") as Set; domainsList << "vcloud"; vServ.setList("domainAssociationIDs", domainsList.toList());

 

// Add service to category

catDefintion = categoryType.getProperty("definition");

vCat.getList(catDefintion).add(vServ);

toMerge << vServ;

dmcType = ts.getType("FSMDynamicManagedComponent");

 

// Add all VMs

vmDMC = ts.getObjectShell(dmcType);

vmDMC.setName("VMs");

vmDMC.set("container",vServ);

vmDMC.set("componentQuery","(VMVCloudVApp where name ='"+vAppName+"').virtualMachines");                             

 

//Here to retrieve all virtualMachines of the specified vApp toMerge << vmDMC;

 

vServ.set("definition",[vmDMC]);

ts.mergeData(toMerge);

return;