diff --git a/standard/openapi/ogcapi-coverages-1.bundled.json b/standard/openapi/ogcapi-coverages-1.bundled.json
index 728e978..270eb5a 100644
--- a/standard/openapi/ogcapi-coverages-1.bundled.json
+++ b/standard/openapi/ogcapi-coverages-1.bundled.json
@@ -499,21 +499,18 @@
                             "default": 0,
                             "minimum": 0
                           },
-                          "x-ogc-observedProperty": {
-                            "type": "string"
-                          },
-                          "x-ogc-observedPropertyURI": {
+                          "x-ogc-definition": {
                             "type": "string",
                             "format": "uri"
                           },
-                          "x-ogc-uom": {
+                          "x-ogc-unit": {
                             "type": "string"
                           },
-                          "x-ogc-uomURI": {
+                          "x-ogc-unitLang": {
                             "type": "string",
                             "format": "uri"
                           },
-                          "x-ogc-fieldIndex": {
+                          "x-ogc-propertySeq": {
                             "type": "integer",
                             "minimum": 0
                           }
diff --git a/standard/openapi/schemas/tms/propertiesSchema.yaml b/standard/openapi/schemas/tms/propertiesSchema.yaml
index 74c290e..5d547cf 100644
--- a/standard/openapi/schemas/tms/propertiesSchema.yaml
+++ b/standard/openapi/schemas/tms/propertiesSchema.yaml
@@ -73,16 +73,14 @@ properties:
            type: integer
            default: 0
            minimum: 0
-         x-ogc-observedProperty:
-           type: string
-         x-ogc-observedPropertyURI:
+         x-ogc-definition:
            type: string
            format: uri
-         x-ogc-uom:
+         x-ogc-unit:
            type: string
-         x-ogc-uomURI:
+         x-ogc-unitLang:
            type: string
            format: uri
-         x-ogc-fieldIndex:
+         x-ogc-propertySeq:
            type: integer
            minimum: 0