diff --git a/data/schema/v2/DecisionPointGroup_2_0_0.schema.json b/data/schema/v2/DecisionPointGroup_2_0_0.schema.json
index 8c88f921..f9e69201 100644
--- a/data/schema/v2/DecisionPointGroup_2_0_0.schema.json
+++ b/data/schema/v2/DecisionPointGroup_2_0_0.schema.json
@@ -20,7 +20,7 @@
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diff --git a/data/schema/v2/DecisionPoint_2_0_0.schema.json b/data/schema/v2/DecisionPoint_2_0_0.schema.json
index 0fe6e2f7..f51efe8e 100644
--- a/data/schema/v2/DecisionPoint_2_0_0.schema.json
+++ b/data/schema/v2/DecisionPoint_2_0_0.schema.json
@@ -57,7 +57,7 @@
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diff --git a/data/schema/v2/DecisionTable_2_0_0.schema.json b/data/schema/v2/DecisionTable_2_0_0.schema.json
index 3e861073..56cd0794 100644
--- a/data/schema/v2/DecisionTable_2_0_0.schema.json
+++ b/data/schema/v2/DecisionTable_2_0_0.schema.json
@@ -20,7 +20,7 @@
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diff --git a/data/schema/v2/SelectionList_2_0_0.schema.json b/data/schema/v2/SelectionList_2_0_0.schema.json
index 8517ccbc..60f3291f 100644
--- a/data/schema/v2/SelectionList_2_0_0.schema.json
+++ b/data/schema/v2/SelectionList_2_0_0.schema.json
@@ -81,7 +81,7 @@
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diff --git a/data/schema/v2/SsvcObjectRegistry_2_0_0.schema.json b/data/schema/v2/SsvcObjectRegistry_2_0_0.schema.json
index 4a59209e..947fb94e 100644
--- a/data/schema/v2/SsvcObjectRegistry_2_0_0.schema.json
+++ b/data/schema/v2/SsvcObjectRegistry_2_0_0.schema.json
@@ -20,7 +20,7 @@
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           "maxLength": 1000,
           "minLength": 3,
-          "pattern": "^(x_([a-z]|[0-9])(((([a-z]|[0-9])|-)){0,61}([a-z]|[0-9]))?(\\.([a-z]|[0-9])(((([a-z]|[0-9])|-)){0,61}([a-z]|[0-9]))?)+\\#(([a-z]|[0-9]))+((\\.|-)(([a-z]|[0-9]))+)*|[a-z]([a-z]|[0-9])(((\\.|-))?(([a-z]|[0-9]))+)+(\\#(([a-z]|[0-9]))+((\\.|-)(([a-z]|[0-9]))+)*)?)((/|/(([a-zA-Z]{2,3}(-[a-zA-Z]{3}(-[a-zA-Z]{3}){0,2})?|[a-zA-Z]{4,8})(-[a-zA-Z]{4})?(-([a-zA-Z]{2}|[0-9]{3}))?(-(([a-zA-Z0-9]){5,8}|[0-9]([a-zA-Z0-9]){3}))*(-[0-9A-WY-Za-wy-z](-([a-zA-Z0-9]){2,8})+)*(-[xX](-([a-zA-Z0-9]){2,8})+)?|[xX](-([a-zA-Z0-9]){2,8})+|i-default|i-mingo))((/((([a-zA-Z]{2,3}(-[a-zA-Z]{3}(-[a-zA-Z]{3}){0,2})?|[a-zA-Z]{4,8})(-[a-zA-Z]{4})?(-([a-zA-Z]{2}|[0-9]{3}))?(-(([a-zA-Z0-9]){5,8}|[0-9]([a-zA-Z0-9]){3}))*(-[0-9A-WY-Za-wy-z](-([a-zA-Z0-9]){2,8})+)*(-[xX](-([a-zA-Z0-9]){2,8})+)?|[xX](-([a-zA-Z0-9]){2,8})+|i-default|i-mingo)|\\.([a-z]|[0-9])(((([a-z]|[0-9])|-)){0,61}([a-z]|[0-9]))?(\\.([a-z]|[0-9])(((([a-z]|[0-9])|-)){0,61}([a-z]|[0-9]))?)+\\#(([a-z]|[0-9]))+((\\.|-)(([a-z]|[0-9]))+)*|\\.(([a-z]|[0-9])(((([a-z]|[0-9])|-)){0,61}([a-z]|[0-9]))?(\\.([a-z]|[0-9])(((([a-z]|[0-9])|-)){0,61}([a-z]|[0-9]))?)+|([a-z]|[0-9])(((([a-z]|[0-9])|-)){0,61}([a-z]|[0-9]))?(\\.([a-z]|[0-9])(((([a-z]|[0-9])|-)){0,61}([a-z]|[0-9]))?)+\\#(([a-z]|[0-9]))+((\\.|-)(([a-z]|[0-9]))+)*)\\$(([a-zA-Z]{2,3}(-[a-zA-Z]{3}(-[a-zA-Z]{3}){0,2})?|[a-zA-Z]{4,8})(-[a-zA-Z]{4})?(-([a-zA-Z]{2}|[0-9]{3}))?(-(([a-zA-Z0-9]){5,8}|[0-9]([a-zA-Z0-9]){3}))*(-[0-9A-WY-Za-wy-z](-([a-zA-Z0-9]){2,8})+)*(-[xX](-([a-zA-Z0-9]){2,8})+)?|[xX](-([a-zA-Z0-9]){2,8})+|i-default|i-mingo)))+)?)?$",
+          "pattern": "^(x_([a-z]|[0-9])(((([a-z]|[0-9])|-)){0,61}([a-z]|[0-9]))?(\\.([a-z]|[0-9])(((([a-z]|[0-9])|-)){0,61}([a-z]|[0-9]))?)+#(([a-z]|[0-9]))+((\\.|-)(([a-z]|[0-9]))+)*|[a-z]([a-z]|[0-9])(((\\.|-))?(([a-z]|[0-9]))+)+(#(([a-z]|[0-9]))+((\\.|-)(([a-z]|[0-9]))+)*)?)((/|/(([a-zA-Z]{2,3}(-[a-zA-Z]{3}(-[a-zA-Z]{3}){0,2})?|[a-zA-Z]{4,8})(-[a-zA-Z]{4})?(-([a-zA-Z]{2}|[0-9]{3}))?(-(([a-zA-Z0-9]){5,8}|[0-9]([a-zA-Z0-9]){3}))*(-[0-9A-WY-Za-wy-z](-([a-zA-Z0-9]){2,8})+)*(-[xX](-([a-zA-Z0-9]){2,8})+)?|[xX](-([a-zA-Z0-9]){2,8})+|i-default|i-mingo))((/((([a-zA-Z]{2,3}(-[a-zA-Z]{3}(-[a-zA-Z]{3}){0,2})?|[a-zA-Z]{4,8})(-[a-zA-Z]{4})?(-([a-zA-Z]{2}|[0-9]{3}))?(-(([a-zA-Z0-9]){5,8}|[0-9]([a-zA-Z0-9]){3}))*(-[0-9A-WY-Za-wy-z](-([a-zA-Z0-9]){2,8})+)*(-[xX](-([a-zA-Z0-9]){2,8})+)?|[xX](-([a-zA-Z0-9]){2,8})+|i-default|i-mingo)|\\.([a-z]|[0-9])(((([a-z]|[0-9])|-)){0,61}([a-z]|[0-9]))?(\\.([a-z]|[0-9])(((([a-z]|[0-9])|-)){0,61}([a-z]|[0-9]))?)+#(([a-z]|[0-9]))+((\\.|-)(([a-z]|[0-9]))+)*|\\.(([a-z]|[0-9])(((([a-z]|[0-9])|-)){0,61}([a-z]|[0-9]))?(\\.([a-z]|[0-9])(((([a-z]|[0-9])|-)){0,61}([a-z]|[0-9]))?)+|([a-z]|[0-9])(((([a-z]|[0-9])|-)){0,61}([a-z]|[0-9]))?(\\.([a-z]|[0-9])(((([a-z]|[0-9])|-)){0,61}([a-z]|[0-9]))?)+#(([a-z]|[0-9]))+((\\.|-)(([a-z]|[0-9]))+)*)\\$(([a-zA-Z]{2,3}(-[a-zA-Z]{3}(-[a-zA-Z]{3}){0,2})?|[a-zA-Z]{4,8})(-[a-zA-Z]{4})?(-([a-zA-Z]{2}|[0-9]{3}))?(-(([a-zA-Z0-9]){5,8}|[0-9]([a-zA-Z0-9]){3}))*(-[0-9A-WY-Za-wy-z](-([a-zA-Z0-9]){2,8})+)*(-[xX](-([a-zA-Z0-9]){2,8})+)?|[xX](-([a-zA-Z0-9]){2,8})+|i-default|i-mingo)))+)?)?$",
           "type": "string"
         },
         "key": {
diff --git a/src/ssvc/utils/patterns.py b/src/ssvc/utils/patterns.py
index 0580e608..de9460be 100644
--- a/src/ssvc/utils/patterns.py
+++ b/src/ssvc/utils/patterns.py
@@ -51,10 +51,10 @@
 dot = '\\.'
 specialchar = f'({dot}|{dash})'
 fragment_seg = f'({alnumlow})+({specialchar}({alnumlow})+)*'
-x_name = f'{reverse_dns}\\#{fragment_seg}'
+x_name = f'{reverse_dns}#{fragment_seg}'
 x_base = f'x_{x_name}'
 ns_core = f'{lower}{alnumlow}(({specialchar})?({alnumlow})+)+'
-reg_base = f'{ns_core}(\\#{fragment_seg})?'
+reg_base = f'{ns_core}(#{fragment_seg})?'
 base_ns = f'({x_base}|{reg_base})'
 singleton = '[0-9A-WY-Za-wy-z]'
 bcp47 = (