diff --git a/rules/unit-UBL-DE/UBL-IN_DE-R-001.xml b/rules/unit-UBL-DE/UBL-IN_DE-R-001.xml
index 6b76c629..65fa7b50 100644
--- a/rules/unit-UBL-DE/UBL-IN_DE-R-001.xml
+++ b/rules/unit-UBL-DE/UBL-IN_DE-R-001.xml
@@ -6,8 +6,8 @@
 	</assert>
 	<test>
 		<assert>
+		    <description>DE-R-001 unit test</description>
 			<success>DE-R-001</success>
-			<description>DE-R-001 unit test</description>
 		</assert>
 <Invoice xmlns="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2" xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2" xmlns:cec="urn:oasis:names:specification:ubl:schema:xsd:CommonExtensionComponents-2" xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
     <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:fdc:peppol.eu:2017:poacc:billing:3.0</cbc:CustomizationID>
diff --git a/rules/unit-UBL-DE/UBL-IN_DE-R-016.xml b/rules/unit-UBL-DE/UBL-IN_DE-R-016.xml
index 8b4d4c11..4cf5372a 100644
--- a/rules/unit-UBL-DE/UBL-IN_DE-R-016.xml
+++ b/rules/unit-UBL-DE/UBL-IN_DE-R-016.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <testSet xmlns="http://difi.no/xsd/vefa/validator/1.0" configuration="peppolbis-en16931-base-3.0-ubl">
 	<assert>
-    <description>DE-R-016 description tbd</description>
+	    <description>DE-R-016 If one of the VAT codes S, Z, E, AE, K, G, L, or M is used, an invoice shall contain at least one of the following elements: "Seller VAT identifier" (BT-31) or "Seller tax registration identifier" (BT-32) or "SELLER TAX REPRESENTATIVE PARTY" (BG-11).</description>
 		<scope>DE-R-016</scope>
 	</assert>
 	<test>
@@ -470,9 +470,6 @@
         <cbc:Amount currencyID="EUR">0</cbc:Amount>
         <cbc:BaseAmount currencyID="EUR">0</cbc:BaseAmount>
         <cac:TaxCategory>
-            <?xmute mutator="code" values="Z,E,AE,K,G,L,M" 
-              schematron-invalid="xrubl:BR-DE-16" id="ubl-inv-mandatory-companyID-with-some-tax-category-BT-95-invalid"
-              description="mandatory companyID with some tax category" ?>
             <cbc:ID>S</cbc:ID>
             <cbc:Percent>19</cbc:Percent>
             <cac:TaxScheme>
diff --git a/rules/unit-UBL-DE/UBL-IN_DE-R-027.xml b/rules/unit-UBL-DE/UBL-IN_DE-R-027.xml
index 61b24c78..c391d670 100644
--- a/rules/unit-UBL-DE/UBL-IN_DE-R-027.xml
+++ b/rules/unit-UBL-DE/UBL-IN_DE-R-027.xml
@@ -303,7 +303,7 @@
     
     <test>
         <assert>
-            <error>DE-R-027</error>
+            <warning>DE-R-027</warning>
         </assert>
 <Invoice xmlns="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2" xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2" xmlns:cec="urn:oasis:names:specification:ubl:schema:xsd:CommonExtensionComponents-2" xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
   <cbc:CustomizationID>urn:cen.eu:en16931:2017#compliant#urn:fdc:peppol.eu:2017:poacc:billing:3.0</cbc:CustomizationID>
diff --git a/rules/unit-UBL-DE/UBL-IN_DE-R-031.xml b/rules/unit-UBL-DE/UBL-IN_DE-R-031.xml
index 83ceee02..b5a1d50f 100644
--- a/rules/unit-UBL-DE/UBL-IN_DE-R-031.xml
+++ b/rules/unit-UBL-DE/UBL-IN_DE-R-031.xml
@@ -461,7 +461,7 @@
     
     <test>
         <assert>
-            <error>DE-R-030</error>
+            <error>DE-R-031</error>
         </assert>
         
         <Invoice xmlns="urn:oasis:names:specification:ubl:schema:xsd:Invoice-2" xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2" xmlns:cec="urn:oasis:names:specification:ubl:schema:xsd:CommonExtensionComponents-2" xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2">
diff --git a/structure/syntax/part/payee-party.xml b/structure/syntax/part/payee-party.xml
index bc5f88c4..0c64477a 100644
--- a/structure/syntax/part/payee-party.xml
+++ b/structure/syntax/part/payee-party.xml
@@ -18,7 +18,7 @@
                 <Description>This element is used for both the identification of the Payee, or the unique banking reference identifier of Payee (assigned by the Payee bank.) For payee identification use ICD code list, for SEPA bank assigned creditor reference, use SEPA.</Description>
                 <DataType>Text</DataType>
                 <Reference type="BUSINESS_TERM">BT-60, BT-90</Reference>
-                <Reference type="RULE">DE-R-30</Reference>
+                <Reference type="RULE">DE-R-030</Reference>
                 
                 <Attribute usage="Optional">
                     <Term>schemeID</Term>