diff --git a/src/main/java/info/bukova/isspst/data/TripBillApproval.java b/src/main/java/info/bukova/isspst/data/TripBillApproval.java
index 84388caa..bda81d49 100644
--- a/src/main/java/info/bukova/isspst/data/TripBillApproval.java
+++ b/src/main/java/info/bukova/isspst/data/TripBillApproval.java
@@ -18,6 +18,22 @@ public class TripBillApproval extends RequirementBase {
 	@JoinColumn(name = "TRIPBILL_ID")
 	private TripBill bill;
 
+	@Override
+	public String getNumser() {
+
+		if (bill == null) {
+			return "";
+		}
+
+		TripRequirement tr = bill.getRequirement();
+
+		if (tr == null) {
+			return "";
+		}
+
+		return tr.getNumser();
+	}
+
 	public TripBill getBill() {
 		return bill;
 	}
diff --git a/src/main/java/info/bukova/isspst/services/tripbill/TripBillApprovalServiceImpl.java b/src/main/java/info/bukova/isspst/services/tripbill/TripBillApprovalServiceImpl.java
index 11080ccf..c9827168 100644
--- a/src/main/java/info/bukova/isspst/services/tripbill/TripBillApprovalServiceImpl.java
+++ b/src/main/java/info/bukova/isspst/services/tripbill/TripBillApprovalServiceImpl.java
@@ -8,12 +8,13 @@ import info.bukova.isspst.data.TripBillApproval;
 import info.bukova.isspst.services.IsspstException;
 import info.bukova.isspst.services.requirement.RequirementBaseServiceImpl;
 import info.bukova.isspst.services.requirement.RequirementTypeService;
+
+import java.util.Date;
+
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.transaction.annotation.Transactional;
 
-import java.util.Date;
-
 /**
  * @author Pepa Rokos
  */
@@ -34,7 +35,7 @@ public class TripBillApprovalServiceImpl extends RequirementBaseServiceImpl<Trip
 		approval.setReqDate(new Date());
 		approval.setType(reqTypeService.getTypeById(Constants.REQTYPE_BUSINESSTRIP));
 		approval.setState(RequirementState.NEW);
-		approval.setNumser(bill.getRequirement().getNumser());
+		// approval.setNumser(bill.getRequirement().getNumser());
 		approval.setDescription(StringUtils.localize("TravelOrdersFormTitle") + " \"" + bill.getOwnedBy() + "\" - " + bill.getRequirement().getDescription());
 		approval.setBill(bill);
 		bill.setApproval(approval);