Erro ao provisionar PWA com mesmo nome PWA

Sintoma:

Ao tentar reprovisionar o PWA utilizando as mesmas bases de content e do PWA utilizando o nome original (PWA) o erro abaixo era apresentado:

Mensagens de erros:

1) ProjectSite not created.

2) System.NullReferenceException: Object reference not set to an instance of an object.   
at Microsoft.SharePoint.SPSite..ctor(Guid id, SPFarm farm, SPUrlZone zone, SPUserToken userToken)   
at Microsoft.SharePoint.SPSite..ctor(Guid id)   
at Microsoft.Office.Project.Server.Administration.ProjectSite..ctor(Guid webAppId, Guid siteId, String adminName, Int32 lcid, Boolean needsUpgrade, PsiServiceApplication parent)   
at Microsoft.Office.Project.Server.Administration.ProjectSiteCollection.Add(Guid webAppId, Guid siteId, String adminName, Int32 lcid, String PubDBConnString, String VerDBConnString, String WorkDBConnString, String RepDBConnString, Boolean needsUpgrade)

3) Provisioning ‘PWA’: Project site object creation failed. Exception ‘System.NullReferenceException: Object reference not set to an instance of an object.   
at Microsoft.SharePoint.SPSite..ctor(Guid id, SPFarm farm, SPUrlZone zone, SPUserToken userToken)   
at Microsoft.SharePoint.SPSite..ctor(Guid id)   
at Microsoft.Office.Project.Server.Administration.ProjectSite..ctor(Guid webAppId, Guid siteId, String adminName, Int32 lcid, Boolean needsUpgrade, PsiServiceApplication parent)   
at Microsoft.Office.Project.Server.Administration.ProjectSiteCollection.Add(Guid webAppId, Guid siteId, String adminName, Int32 lcid, String PubDBConnString, String VerDBConnString, String WorkDBConnString, String RepDBConnString, Boolean needsUpgrade)   
at Microsoft.Office.Project.Server.Administration.PsiServiceApplication.CreateSite(ProjectProvisionSettings provset)’.

4) Failed to provision site PWA with error: System.NullReferenceException: Object reference not set to an instance of an object.   
at Microsoft.SharePoint.SPSite..ctor(Guid id, SPFarm farm, SPUrlZone zone, SPUserToken userToken)   
at Microsoft.SharePoint.SPSite..ctor(Guid id)   
at Microsoft.Office.Project.Server.Administration.ProjectSite..ctor(Guid webAppId, Guid siteId, String adminName, Int32 lcid, Boolean needsUpgrade, PsiServiceApplication parent)   
at Microsoft.Office.Project.Server.Administration.ProjectSiteCollection.Add(Guid webAppId, Guid siteId, String adminName, Int32 lcid, String PubDBConnString, String VerDBConnString, String WorkDBConnString, String RepDBConnString, Boolean needsUpgrade)   
at Microsoft.Office.Project.Server.Administration.PsiServiceApplication.CreateSite(ProjectProvisionSettings provset) 

Solução:

1) Reprovisionamos com sucesso o PWA com outro nome utilizando as mesmas bases. Neste caso, utilizamos o nome PWAQA;

2) Desprovisionamos o PWAQA;

3) Reprovisionamos com sucesso o PWA com o nome original utilizando as mesmas bases. Neste caso, utilizamos o nome PWA;

Com esta ação, a base de config do SharePoint ficou limpa da referência do nome PWA anteior no Web Application utilizado.