diff --git a/src/test/data/GetInGroups/SetConstraintAll.ili b/src/test/data/GetInGroups/SetConstraintAll.ili
index 32b85d2..1fd7464 100644
--- a/src/test/data/GetInGroups/SetConstraintAll.ili
+++ b/src/test/data/GetInGroups/SetConstraintAll.ili
@@ -16,12 +16,12 @@ MODEL TestSuite
         textAttr: TEXT*16;
         enumAttr: (val1,val2,val3);
         numberAttr: 0..10;
-        SET CONSTRAINT INTERLIS.elementCount(GeoW_FunctionsExt.GetInGroups(ALL, "textAttr")) == 3;
-        SET CONSTRAINT INTERLIS.elementCount(GeoW_FunctionsExt.GetInGroups(ALL, "enumAttr")) == 3;
-        SET CONSTRAINT INTERLIS.elementCount(GeoW_FunctionsExt.GetInGroups(ALL, "numberAttr")) == 3;
-        SET CONSTRAINT INTERLIS.elementCount(GeoW_FunctionsExt.GetInGroups(ALL, "textAttr")) == 2;
-        SET CONSTRAINT INTERLIS.elementCount(GeoW_FunctionsExt.GetInGroups(ALL, "enumAttr")) == 2;
-        SET CONSTRAINT INTERLIS.elementCount(GeoW_FunctionsExt.GetInGroups(ALL, "numberAttr")) == 2;
+        SET CONSTRAINT trueConstraintTextAttr:      INTERLIS.elementCount(GeoW_FunctionsExt.GetInGroups(ALL, "textAttr")) == 3;
+        SET CONSTRAINT trueConstraintEnumAttr:      INTERLIS.elementCount(GeoW_FunctionsExt.GetInGroups(ALL, "enumAttr")) == 3;
+        SET CONSTRAINT trueConstraintNumberAttr:    INTERLIS.elementCount(GeoW_FunctionsExt.GetInGroups(ALL, "numberAttr")) == 3;
+        SET CONSTRAINT falseConstraintTextAttr:     INTERLIS.elementCount(GeoW_FunctionsExt.GetInGroups(ALL, "textAttr")) == 2;
+        SET CONSTRAINT falseConstraintEnumAttr:     INTERLIS.elementCount(GeoW_FunctionsExt.GetInGroups(ALL, "enumAttr")) == 2;
+        SET CONSTRAINT falseConstraintNumberAttr:   INTERLIS.elementCount(GeoW_FunctionsExt.GetInGroups(ALL, "numberAttr")) == 2;
     END BaseClass;
 
   END FunctionTestTopic;
diff --git a/src/test/java/ch/geowerkstatt/ilivalidator/extensions/functions/GetInGroupsIoxPluginTest.java b/src/test/java/ch/geowerkstatt/ilivalidator/extensions/functions/GetInGroupsIoxPluginTest.java
index 26742de..f0b3b64 100644
--- a/src/test/java/ch/geowerkstatt/ilivalidator/extensions/functions/GetInGroupsIoxPluginTest.java
+++ b/src/test/java/ch/geowerkstatt/ilivalidator/extensions/functions/GetInGroupsIoxPluginTest.java
@@ -22,11 +22,11 @@ void setUp() {
     void MandatoryConstraintOnThis() throws Ili2cFailure, IoxException {
         vh.runValidation(new String[]{TEST_DATA}, new String[]{"GetInGroups/SetConstraintAll.ili"});
         Assert.equals(3, vh.getErrs().size());
-        AssertionHelper.assertNoConstraintError(vh, "Constraint1");
-        AssertionHelper.assertNoConstraintError(vh, "Constraint2");
-        AssertionHelper.assertNoConstraintError(vh, "Constraint3");
-        AssertionHelper.assertSingleConstraintError(vh, 0, "Constraint4");
-        AssertionHelper.assertSingleConstraintError(vh, 0, "Constraint5");
-        AssertionHelper.assertSingleConstraintError(vh, 0, "Constraint6");
+        AssertionHelper.assertNoConstraintError(vh, "trueConstraintTextAttr");
+        AssertionHelper.assertNoConstraintError(vh, "trueConstraintEnumAttr");
+        AssertionHelper.assertNoConstraintError(vh, "trueConstraintNumberAttr");
+        AssertionHelper.assertSingleConstraintError(vh, 0, "falseConstraintTextAttr");
+        AssertionHelper.assertSingleConstraintError(vh, 0, "falseConstraintEnumAttr");
+        AssertionHelper.assertSingleConstraintError(vh, 0, "falseConstraintNumberAttr");
     }
 }