diff --git a/src/com/rjconsultores/ventaboletos/service/AidfService.java b/src/com/rjconsultores/ventaboletos/service/AidfService.java
index 13dd201c1..8bf81f75a 100644
--- a/src/com/rjconsultores/ventaboletos/service/AidfService.java
+++ b/src/com/rjconsultores/ventaboletos/service/AidfService.java
@@ -12,5 +12,6 @@ public interface AidfService extends GenericService<Aidf, Long> {
 	public List<AidfEspecie> obtenerTodosAdifEspecie();
 	public List<AidfTipo> obtenerTodosAdifTipo();
 	public List<Aidf> buscaAidfsPorEmpresas(List<Empresa> empresas);
+	public Long validarDocFiscalSerieFormInicialFinal(Aidf entidad);
 
 }
diff --git a/src/com/rjconsultores/ventaboletos/service/impl/AidfServiceImpl.java b/src/com/rjconsultores/ventaboletos/service/impl/AidfServiceImpl.java
index c27cebd82..83e822877 100644
--- a/src/com/rjconsultores/ventaboletos/service/impl/AidfServiceImpl.java
+++ b/src/com/rjconsultores/ventaboletos/service/impl/AidfServiceImpl.java
@@ -87,4 +87,22 @@ public class AidfServiceImpl implements AidfService {
 		List<Aidf> aidfs = aidfDAO.buscaAidfsPorEmpresas(empresas);
 		return aidfs;
 	}
+	
+	public Long validarDocFiscalSerieFormInicialFinal(Aidf entidad){
+		
+		List<Aidf> list = obtenerTodos();
+		
+		for(Aidf e : list){
+			if(e.getDocfiscal().trim().equals(entidad.getDocfiscal().trim())){
+				if(e.getSerie().trim().equals(entidad.getSerie().trim())){
+					if( ( Long.parseLong(entidad.getForminicial()) >= Long.parseLong(e.getForminicial()) && Long.parseLong(entidad.getForminicial()) <= Long.parseLong(e.getFormfinal()) ) 
+						 ||
+						 (  Long.parseLong(entidad.getFormfinal()) >= Long.parseLong(e.getForminicial()) && Long.parseLong(entidad.getFormfinal()) <= Long.parseLong(e.getFormfinal()) )  ){
+						return e.getAidfId();
+					}
+				}
+			}
+		}
+		return -1l;
+	}
 }