diff --git a/pom.xml b/pom.xml
index ba907f2c..49b8dfcb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -9,7 +9,7 @@
 	<version>1.0.0-BUILD-SNAPSHOT</version>
 	<properties>
 		<java-version>1.6</java-version>
-		<zk.version>7.0.1</zk.version>
+		<zk.version>7.0.2</zk.version>
 		<org.springframework-version>3.1.1.RELEASE</org.springframework-version>
 		<org.aspectj-version>1.6.10</org.aspectj-version>
 		<org.slf4j-version>1.6.6</org.slf4j-version>
diff --git a/src/main/java/info/bukova/isspst/data/Workgroup.java b/src/main/java/info/bukova/isspst/data/Workgroup.java
index 4e5dccd8..0163d69b 100644
--- a/src/main/java/info/bukova/isspst/data/Workgroup.java
+++ b/src/main/java/info/bukova/isspst/data/Workgroup.java
@@ -1,6 +1,7 @@
 package info.bukova.isspst.data;
 
 import java.io.Serializable;
+import java.math.BigDecimal;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -37,6 +38,8 @@ public class Workgroup extends Member implements OwnedDataModel, Serializable {
 	private List<JobMapping> members;
 	@Column(name = "CENTRE")
 	private boolean centre;
+	@Column(name = "REQ_LIMIT", precision = 15, scale = 4)
+	private BigDecimal limit;
 	//BaseData
 	@ManyToOne(fetch=FetchType.LAZY)
 	@JoinColumn(name="OWNED_BY_ID")
@@ -141,5 +144,13 @@ public class Workgroup extends Member implements OwnedDataModel, Serializable {
 	public List<Member> getRemoved() {
 		return removed;
 	}
+
+	public BigDecimal getLimit() {
+		return limit;
+	}
+
+	public void setLimit(BigDecimal limit) {
+		this.limit = limit;
+	}
 	
 }
diff --git a/src/main/java/info/bukova/isspst/services/IsspstException.java b/src/main/java/info/bukova/isspst/services/IsspstException.java
index 449f45c2..4b8fb63f 100644
--- a/src/main/java/info/bukova/isspst/services/IsspstException.java
+++ b/src/main/java/info/bukova/isspst/services/IsspstException.java
@@ -5,6 +5,7 @@ public class IsspstException extends RuntimeException {
 	private static final long serialVersionUID = 1L;
 	
 	 private final static String MSG = "IS Exception. ";
+	 private String reason;
 
 	 public IsspstException() {
              super(MSG);
@@ -22,4 +23,12 @@ public class IsspstException extends RuntimeException {
              super(MSG + message, cause);
      }
 
+	public String getReason() {
+		return reason;
+	}
+
+	protected void setReason(String reason) {
+		this.reason = reason;
+	}
+
 }
diff --git a/src/main/java/info/bukova/isspst/services/requirement/AddRequirementException.java b/src/main/java/info/bukova/isspst/services/requirement/AddRequirementException.java
new file mode 100644
index 00000000..e98068ac
--- /dev/null
+++ b/src/main/java/info/bukova/isspst/services/requirement/AddRequirementException.java
@@ -0,0 +1,21 @@
+package info.bukova.isspst.services.requirement;
+
+import info.bukova.isspst.services.IsspstException;
+
+public class AddRequirementException extends IsspstException {
+
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = -3794779381621324826L;
+	
+	public AddRequirementException() {
+		super();
+	}
+	
+	public AddRequirementException(String message) {
+		super(message);
+		this.setReason(message);
+	}
+
+}
diff --git a/src/main/java/info/bukova/isspst/services/requirement/RequirementBaseServiceImpl.java b/src/main/java/info/bukova/isspst/services/requirement/RequirementBaseServiceImpl.java
index 0a84ae74..d338f7dd 100644
--- a/src/main/java/info/bukova/isspst/services/requirement/RequirementBaseServiceImpl.java
+++ b/src/main/java/info/bukova/isspst/services/requirement/RequirementBaseServiceImpl.java
@@ -59,11 +59,19 @@ public abstract class RequirementBaseServiceImpl<T extends RequirementBase> exte
 		entity.setNumser(this.getNumberSerie());
 		this.addWorkflow(entity);
 		
+		if (!canAdd(entity)) {
+			throw new AddRequirementException();
+		}
+		
 		super.add(entity);
 		
 		this.sendToApprovers(entity);
 	}
 	
+	protected boolean canAdd(T entity) {
+		return true;
+	}
+	
 	private void sendToApprovers(T entity) {
 		SettingsData settings = settingsService.getSettings();
 		List<User> approvers = this.getNextApprover(entity);
diff --git a/src/main/java/info/bukova/isspst/ui/FormViewModel.java b/src/main/java/info/bukova/isspst/ui/FormViewModel.java
index b6dd3e98..f16ed5d9 100644
--- a/src/main/java/info/bukova/isspst/ui/FormViewModel.java
+++ b/src/main/java/info/bukova/isspst/ui/FormViewModel.java
@@ -2,6 +2,7 @@ package info.bukova.isspst.ui;
 
 import info.bukova.isspst.StringUtils;
 import info.bukova.isspst.data.DataModel;
+import info.bukova.isspst.services.IsspstException;
 import info.bukova.isspst.services.Service;
 import info.bukova.isspst.services.ValidationException;
 
@@ -94,6 +95,18 @@ public class FormViewModel<T extends DataModel>
 
 			Messagebox.show(StringUtils.localize("DbValidationError"), StringUtils.localize("Error"), Messagebox.OK, Messagebox.ERROR);
 		}
+		catch (IsspstException e)
+		{
+			if (e.getReason() != null)
+			{
+				Messagebox.show(StringUtils.localize(e.getReason()), StringUtils.localize("Error"), Messagebox.OK, Messagebox.ERROR);
+			}
+			else
+			{
+				Messagebox.show(StringUtils.localize("DbSaveError"), StringUtils.localize("Error"), Messagebox.OK, Messagebox.ERROR);
+			}
+			dataBean.setValid(false);
+		}
 		catch (AccessDeniedException e)
 		{
 			Messagebox.show(StringUtils.localize("ErrorRights"), StringUtils.localize("Error"), Messagebox.OK, Messagebox.ERROR);
diff --git a/src/main/java/info/bukova/isspst/ui/workgroups/WorkgroupForm.java b/src/main/java/info/bukova/isspst/ui/workgroups/WorkgroupForm.java
index 8673a0ee..017a1b41 100644
--- a/src/main/java/info/bukova/isspst/ui/workgroups/WorkgroupForm.java
+++ b/src/main/java/info/bukova/isspst/ui/workgroups/WorkgroupForm.java
@@ -11,6 +11,7 @@ import info.bukova.isspst.services.users.RoleService;
 import info.bukova.isspst.services.users.UserService;
 import info.bukova.isspst.services.workgroups.WorkgroupException;
 import info.bukova.isspst.services.workgroups.WorkgroupService;
+import info.bukova.isspst.ui.BigDecimalConverter;
 import info.bukova.isspst.ui.FormViewModel;
 
 import java.util.ArrayList;
@@ -40,12 +41,14 @@ public class WorkgroupForm extends FormViewModel<Workgroup> {
 	private List<Member> users;
 	private String findUser;
 	private List<Member> selectedUsers;
+	private BigDecimalConverter bdConverter;
 
 	@Init(superclass = true)
 	public void init() {
 		users = new ArrayList<Member>();
 		users.addAll(userService.getAll());
 		selectedUsers = new ArrayList<Member>();
+		bdConverter = new BigDecimalConverter();
 	}
 	
 	public List<Member> getUsers() {
@@ -90,6 +93,8 @@ public class WorkgroupForm extends FormViewModel<Workgroup> {
 					}
 				}
 			}
+			
+			getDataBean().setLimit(null);
 		}
 	}
 	
@@ -229,5 +234,9 @@ public class WorkgroupForm extends FormViewModel<Workgroup> {
 			}
 		}
 	}
+
+	public BigDecimalConverter getBdConverter() {
+		return bdConverter;
+	}
 	
 }
diff --git a/src/main/webapp/WEB-INF/locales/zk-label.properties b/src/main/webapp/WEB-INF/locales/zk-label.properties
index 30deb6fa..f1eac0d1 100644
--- a/src/main/webapp/WEB-INF/locales/zk-label.properties
+++ b/src/main/webapp/WEB-INF/locales/zk-label.properties
@@ -296,3 +296,4 @@ WorkgroupFormUserIsCenterMember=Uživatel je členem střediska, jehož je komis
 WorkgroupFormMemberIsCenterMember=Některý ze členů přidávané komise je členem tohoto střediska!
 WorkgroupFormCannotAddUser=Uživatele nelze přidat
 WorkgroupFormCannotAddWorkgroup=Komisi nelze přidat
+WorkgroupFormOrderLimit=Limit nákupů
diff --git a/src/main/webapp/admin/workgroups/workgroupForm.zul b/src/main/webapp/admin/workgroups/workgroupForm.zul
index 29f50d90..343656b5 100644
--- a/src/main/webapp/admin/workgroups/workgroupForm.zul
+++ b/src/main/webapp/admin/workgroups/workgroupForm.zul
@@ -27,6 +27,12 @@
 							<checkbox label="Středisko" checked="@bind(vm.centre)" disabled="@load(not empty vm.dataBean.created)"/>
 						</cell>
 					</row>
+					<row>
+						<cell sclass="row-title">${labels.WorkgroupFormOrderLimit} :</cell>
+						<cell>
+							<textbox id="limit" width="200px" value="@bind(vm.dataBean.limit) @converter(vm.bdConverter)" disabled="@load(vm.centre)"/>
+						</cell>
+					</row>
 				</rows>
 			</grid>
 			<label value="Přetáhněte myší:"/>