diff --git a/mod-orders-storage/schemas/receiving_history.json b/mod-orders-storage/schemas/receiving_history.json
index 71e822ca..ce7b7ed1 100644
--- a/mod-orders-storage/schemas/receiving_history.json
+++ b/mod-orders-storage/schemas/receiving_history.json
@@ -68,7 +68,7 @@
     },
     "poLineNumber": {
       "description": "A human readable number assigned to this PO line",
-      "pattern": "^[a-zA-Z0-9]{1,16}-[0-9]{1,3}$",
+      "pattern": "^[a-zA-Z0-9]{1,22}-[0-9]{1,3}$",
       "type": "string"
     },
     "poLineReceiptStatus": {
diff --git a/mod-orders-storage/schemas/title.json b/mod-orders-storage/schemas/title.json
index 5280db0e..324dbec0 100644
--- a/mod-orders-storage/schemas/title.json
+++ b/mod-orders-storage/schemas/title.json
@@ -95,7 +95,7 @@
     "poLineNumber": {
       "description": "The number of the POL identified by poLineId",
       "type": "string",
-      "pattern": "^[a-zA-Z0-9]{1,16}-[0-9]{1,3}$",
+      "pattern": "^[a-zA-Z0-9]{1,22}-[0-9]{1,3}$",
       "x-fqm-essential": true,
       "x-fqm-visible-by-default": true
     },
diff --git a/mod-orders/schemas/po_number.json b/mod-orders/schemas/po_number.json
index 964e0edc..92ff810b 100644
--- a/mod-orders/schemas/po_number.json
+++ b/mod-orders/schemas/po_number.json
@@ -6,7 +6,7 @@
     "poNumber": {
       "description": "A human readable generated or manually entered ID assigned to the purchase order",
       "type": "string",
-      "pattern": "^[a-zA-Z0-9]{1,16}$"
+      "pattern": "^[a-zA-Z0-9]{1,22}$"
     }
   },
   "required": [