diff --git a/workflow/posteingang-de-3.0.0.bpmn b/workflow/posteingang-de-3.0.0.bpmn
index ccb4579..c02c2fe 100644
--- a/workflow/posteingang-de-3.0.0.bpmn
+++ b/workflow/posteingang-de-3.0.0.bpmn
@@ -550,8 +550,8 @@ Company: <itemvalue>document.company</itemvalue><br />]]></imixs:value>
 <bpmn.form />
 
 Note: 
-- The Reference Number in the format [2 letters][3 letters][4-digit booking period YYMM][3-digit sequence number]  ==> "invoice.positions"
-- The posting period is the period of the invoice date [YYYYMM] ==> "invoice.period"
+- invoice.positions is the Reference Number only in the format AA-BBB-YYMM-SSS (2 uppercase letters + hyphen + 3 uppercase letters + hyphen + 6-digit date (YYYYMM) + hyphen + 3-digit sequence). No deviations allowed! Example: 'KL-MNO-202605-456'. If no reference number is found leave the field blank
+- invoice.period is the posting period of the invoice date in the format [YYYYMM] . Example '202605'
 
 
 <<EXAMPLES_XML>>
diff --git a/workflow/posteingang-en-3.0.0.bpmn b/workflow/posteingang-en-3.0.0.bpmn
index f5fb771..84360d9 100644
--- a/workflow/posteingang-en-3.0.0.bpmn
+++ b/workflow/posteingang-en-3.0.0.bpmn
@@ -550,9 +550,8 @@ Company: <itemvalue>document.company</itemvalue><br />]]></imixs:value>
 <bpmn.form />
 
 Note: 
-- The Reference Number in the format [2 letters][3 letters][4-digit booking period YYMM][3-digit sequence number]  ==> "invoice.positions"
-- The posting period is the period of the invoice date [YYYYMM] ==> "invoice.period"
-
+- invoice.positions is the Reference Number only in the format AA-BBB-YYMM-SSS (2 uppercase letters + hyphen + 3 uppercase letters + hyphen + 6-digit date (YYYYMM) + hyphen + 3-digit sequence). No deviations allowed! Example: 'KL-MNO-202605-456'. If no reference number is found leave the field blank
+- invoice.period is the posting period of the invoice date in the format [YYYYMM] . Example '202605'
 
 <<EXAMPLES_XML>>