diff --git a/stock/src/main/java/de/srsoftware/umbrella/stock/SqliteDb.java b/stock/src/main/java/de/srsoftware/umbrella/stock/SqliteDb.java
index 68235ca..f595cfe 100644
--- a/stock/src/main/java/de/srsoftware/umbrella/stock/SqliteDb.java
+++ b/stock/src/main/java/de/srsoftware/umbrella/stock/SqliteDb.java
@@ -41,26 +41,7 @@ public class SqliteDb extends BaseDb implements StockDb {
 	}
 
 	@Override
-	public Property setProperty(long ownerId, long itemId, long existingPropId, Object value) {
-		try {
-			Property prop = null;
-			var rs = select(ALL).from(TABLE_PROPERTIES).where(ID,equal(existingPropId)).exec(db);
-			if (rs.next()) prop = Property.of(rs);
-			rs.close();
-			if (prop == null) throw databaseException("Failed to add new property to item {0}",itemId);
-			if ("".equals(value)){
-				delete().from(TABLE_ITEM_PROPERTIES).where(OWNER,equal(ownerId)).where(ITEM_ID,equal(itemId)).where(PROPERTY_ID,equal(existingPropId)).execute(db);
-			} else {
-				replaceInto(TABLE_ITEM_PROPERTIES,OWNER,ITEM_ID,PROPERTY_ID,VALUE).values(ownerId,itemId,existingPropId,value).execute(db);
-			}
-			return prop.value(value);
-		} catch (SQLException e) {
-			throw databaseException("Failed to add new property to item {0}",itemId);
-		}
-	}
-
-	@Override
-	public Property addNewProperty(long ownerId, long itemId, String name, Object value, String unit) {
+	public Property addNewProperty(long itemId, String name, Object value, String unit) {
 		try {
 			db.setAutoCommit(false);
 			var rs = insertInto(TABLE_PROPERTIES,NAME,TYPE,UNIT).values(name,0,unit).execute(db).getGeneratedKeys();
@@ -68,7 +49,7 @@ public class SqliteDb extends BaseDb implements StockDb {
 			if (rs.next()) propertyId = rs.getLong(1);
 			rs.close();
 			if (propertyId == null || propertyId == 0) throw databaseException("Failed to create new property {0} to DB",name);
-			insertInto(TABLE_ITEM_PROPERTIES,OWNER,ITEM_ID,PROPERTY_ID,VALUE).values(ownerId,itemId,propertyId,value).execute(db);
+			insertInto(TABLE_ITEM_PROPERTIES,ITEM_ID,PROPERTY_ID,VALUE).values(itemId,propertyId,value).execute(db);
 			return new Property(propertyId,name,value,unit);
 		} catch (SQLException e) {
 			throw databaseException("Failed to create new property {0} to DB",name);
@@ -323,6 +304,25 @@ public class SqliteDb extends BaseDb implements StockDb {
 		return item;
 	}
 
+	@Override
+	public Property setProperty(long itemId, long existingPropId, Object value) {
+		try {
+			Property prop = null;
+			var rs = select(ALL).from(TABLE_PROPERTIES).where(ID,equal(existingPropId)).exec(db);
+			if (rs.next()) prop = Property.of(rs);
+			rs.close();
+			if (prop == null) throw databaseException("Failed to add new property to item {0}",itemId);
+			if ("".equals(value)){
+				delete().from(TABLE_ITEM_PROPERTIES).where(ITEM_ID,equal(itemId)).where(PROPERTY_ID,equal(existingPropId)).execute(db);
+			} else {
+				replaceInto(TABLE_ITEM_PROPERTIES,ITEM_ID,PROPERTY_ID,VALUE).values(itemId,existingPropId,value).execute(db);
+			}
+			return prop.value(value);
+		} catch (SQLException e) {
+			throw databaseException("Failed to add new property to item {0}",itemId);
+		}
+	}
+
 	private HashMap<String, Long> transformItems(Map<String, Long> oldLocationIdsToNew) throws SQLException {
 		var rs = select(ALL).from(TABLE_ITEMS).exec(db);
 		var insert = insertInto("items_temp",OWNER, OWNER_NUMBER, LOCATION_ID, CODE, NAME);
diff --git a/stock/src/main/java/de/srsoftware/umbrella/stock/StockDb.java b/stock/src/main/java/de/srsoftware/umbrella/stock/StockDb.java
index 95081e2..de60e72 100644
--- a/stock/src/main/java/de/srsoftware/umbrella/stock/StockDb.java
+++ b/stock/src/main/java/de/srsoftware/umbrella/stock/StockDb.java
@@ -6,7 +6,7 @@ import de.srsoftware.umbrella.core.model.*;
 import java.util.Collection;
 
 public interface StockDb {
-	Property addNewProperty(long ownerId, long itemId, String name, Object value, String unit);
+	Property addNewProperty(long itemId, String name, Object value, String unit);
 	Collection<DbLocation> listChildLocations(long parentId);
 	Collection<DbLocation> listCompanyLocations(Company company);
 	Collection<Item>     listItemsAt(Location location);
@@ -15,5 +15,5 @@ public interface StockDb {
 	Item loadItem(long id);
 	DbLocation loadLocation(long locationId);
 	Item save(Item item);
-	Property setProperty(long ownerId, long itemId, long existingPropId, Object value);
+	Property setProperty(long itemId, long existingPropId, Object value);
 }
diff --git a/stock/src/main/java/de/srsoftware/umbrella/stock/StockModule.java b/stock/src/main/java/de/srsoftware/umbrella/stock/StockModule.java
index d3bf89b..2384e49 100644
--- a/stock/src/main/java/de/srsoftware/umbrella/stock/StockModule.java
+++ b/stock/src/main/java/de/srsoftware/umbrella/stock/StockModule.java
@@ -163,22 +163,20 @@ public class StockModule extends BaseHandler implements StockService {
 	private boolean postProperty(UmbrellaUser user, HttpExchange ex) throws IOException {
 		var json = json(ex);
 		if (!(json.get(FIELD_ITEM) instanceof JSONObject itemData)) throw missingFieldException(FIELD_ITEM);
-		if (!(itemData.get(OWNER) instanceof JSONObject owner)) throw missingFieldException(OWNER);
 		if (!(itemData.get(ID) instanceof Number itemId)) throw missingFieldException(ID);
 		if (!(json.get("add_prop") instanceof JSONObject propData)) throw missingFieldException("add_prop");
 		if (!propData.has(VALUE)) throw missingFieldException(VALUE);
 		var value = propData.get(VALUE);
 		if (value == null) throw missingFieldException(VALUE);
-		var ownerId = toOwnerId(owner);
 
 		Property property = null;
 		if (propData.get("existing_prop_id") instanceof Number existingPropId && existingPropId.longValue() != 0L){
-			property = stockDb.setProperty(ownerId,itemId.longValue(),existingPropId.longValue(),value);
+			property = stockDb.setProperty(itemId.longValue(),existingPropId.longValue(),value);
 		} else {
 			if (!(propData.get("new_prop") instanceof JSONObject newProp)) throw unprocessable("data must contain either add_prop.existing_prop_id or add_prop.new_prop!");
 			if (!(newProp.get(NAME) instanceof String name) || name.isBlank()) throw unprocessable("data.add_prop.new_prop does not contain name!");
 			var unit = newProp.get(UNIT) instanceof String u ? nullIfEmpty(u) : null;
-			property = stockDb.addNewProperty(ownerId,itemId.longValue(),name,value,unit);
+			property = stockDb.addNewProperty(itemId.longValue(),name,value,unit);
 		}
 		return sendContent(ex,property);
 	}