NPrinting failed report generation for report

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NPrinting reports might failed due to unsupported items in the QlikView Document; you can find similar error messages in the Scheduler Log:

Failed report generation for report 32ee0e53-6d33-4320-9f42-623177e66ef0 user 4a55925d-d442-4c7b-ba94-e3b9cd7ce1c8 exception System.NotSupportedException: Cannot apply formula =if(num(month(today())-1)=1,'Enero',??    if(num(month(today())-1)=2,'Febrero',??    if(num(month(today())-1)=3,'Marzo',??    if(num(month(today())-1)=4,'Abril',??    if(num(month(today())-1)=5,'Mayo',??    if(num(month(today())-1)=6,'Junio',??    if(num(month(today())-1)=7,'Julio',??    if(num(month(today())-1)=8,'Agosto',??    if(num(month(today())-1)=9,'Septiembre',??    if(num(month(today())-1)=10,'Octubre',??    if(num(month(today())-1)=11,'Noviembre','Diciembre')))))))))))?? & ' de ' & year( addmonths(today(),-1)) due to invalid selections Filters: [Fields: [Name: F\Año, ConnectionId: 36183e0b-8efc-4ca1-901c-c37a19faccbb, Values: [Evaluate:year(addmonths(today(),-1))], Override: False, Void: False], Void: False?Fields: [Name: F\Mes, ConnectionId: 36183e0b-8efc-4ca1-901c-c37a19faccbb, Values: [Evaluate:num(month(addmonths(today(),-1)))], Override: False, Void: False], Void: False], Bookmark: , Void: False??   at Qlik.Reporting.Reports.Tree.Template.FormulaNode.ApplyEmptyResponse(EmptyContentNodeResponse response, TcTransformationContext transformationCtx)??   at Qlik.Reporting.Reports.Tree.Template.TemplateLeafNode`5.ApplyResponse(IContentNodeResponse response, TcTransformationContext transformationCtx)??   at Qlik.Printing.Trees.TcTransformation.ApplyResponse(IContentNodeResponse response)??   at Qlik.Printing.TreeTransformationService.Process(IReportRequest reportRequest, IContentNodeResponse contentNodeResponse) : STACK :    at Qlik.Reporting.Reports.Tree.Template.FormulaNode.ApplyEmptyResponse(EmptyContentNodeResponse response, TcTransformationContext transformationCtx)??   at Qlik.Reporting.Reports.Tree.Template.TemplateLeafNode`5.ApplyResponse(IContentNodeResponse response, TcTransformationContext transformationCtx)??   at Qlik.Printing.Trees.TcTransformation.ApplyResponse(IContentNodeResponse response)??   at Qlik.Printing.TreeTransformationService.Process(IReportRequest reportRequest, IContentNodeResponse contentNodeResponse)        
 

Resolution:

Verify if the document includes unsupported items. See article Nprinting: Unsupported QlikView Document items and follow the recommendations.