diff --git a/repo/rest-api/specs/global/examples.json b/repo/rest-api/specs/global/examples.json
index 76d32e54fb5..584f019c888 100644
--- a/repo/rest-api/specs/global/examples.json
+++ b/repo/rest-api/specs/global/examples.json
@@ -436,6 +436,17 @@
 			}
 		}
 	},
+	"PropertyLabelDuplicateExample": {
+		"value": {
+			"code": "property-label-duplicate",
+			"message": "Property '{duplicate_property_id}' already has label '{label}' associated with language code {language}",
+			"context": {
+				"language": "{language}",
+				"label": "{label}",
+				"matching-property-id": "{duplicate_property_id}"
+			}
+		}
+	},
 	"ItemStatementIdExample": {
 		"value": "Q42$F078E5B3-F9A8-480E-B7AC-D97778CBBEF9"
 	},
diff --git a/repo/rest-api/specs/global/requests.json b/repo/rest-api/specs/global/requests.json
index f550637726f..b4c8bffb888 100644
--- a/repo/rest-api/specs/global/requests.json
+++ b/repo/rest-api/specs/global/requests.json
@@ -11,7 +11,7 @@
 							"properties": {
 								"label": {
 									"type": "string",
-									"example": "Douglas Adams"
+									"example": "an example label"
 								}
 							},
 							"required": [ "label" ]
diff --git a/repo/rest-api/specs/global/responses.json b/repo/rest-api/specs/global/responses.json
index 90681594035..9840cc584f5 100644
--- a/repo/rest-api/specs/global/responses.json
+++ b/repo/rest-api/specs/global/responses.json
@@ -659,6 +659,35 @@
 			}
 		}
 	},
+	"InvalidSetPropertyLabelInput": {
+		"description": "The request cannot be processed",
+		"content": {
+			"application/json": {
+				"schema": { "$ref": "./response-parts.json#/ContextError" },
+				"examples": {
+					"invalid-property-id": { "$ref": "./examples.json#/InvalidPropertyIdExample" },
+					"invalid-language-code": { "$ref": "./examples.json#/InvalidLanguageCodeExample" },
+					"invalid-label": { "$ref": "./examples.json#/InvalidLabelExample" },
+					"label-empty": { "$ref": "./examples.json#/LabelEmptyExample" },
+					"label-too-long": { "$ref": "./examples.json#/LabelTooLongExample" },
+					"label-description-same-value": {
+						"$ref": "./examples.json#/LabelDescriptionSameValueExample"
+					},
+					"property-label-duplicate": {
+						"$ref": "./examples.json#/PropertyLabelDuplicateExample"
+					},
+					"invalid-edit-tag": { "$ref": "./examples.json#/InvalidEditTagExample" },
+					"comment-too-long": { "$ref": "./examples.json#/CommentTooLongExample" }
+				}
+			}
+		},
+		"headers": {
+			"Content-Language": {
+				"schema": { "type": "string" },
+				"description": "Language code of the language in which error message is provided"
+			}
+		}
+	},
 	"InvalidSetItemDescriptionInput": {
 		"description": "The request cannot be processed",
 		"content": {
@@ -1136,37 +1165,6 @@
 			}
 		}
 	},
-	"ItemLabel": {
-		"description": "Item's label in a specific language",
-		"headers": {
-			"Last-Modified": {
-				"schema": {
-					"type": "string"
-				},
-				"description": "Last modified date"
-			},
-			"ETag": {
-				"schema": {
-					"type": "string"
-				},
-				"description": "Last entity revision number"
-			},
-			"X-Authenticated-User": {
-				"schema": {
-					"type": "string"
-				},
-				"description": "Optional username of the user making the request"
-			}
-		},
-		"content": {
-			"application/json": {
-				"schema": {
-					"type": "string",
-					"example": "Douglas Adams"
-				}
-			}
-		}
-	},
 	"ItemDescriptions": {
 		"description": "Item's descriptions by language",
 		"headers": {
@@ -1322,8 +1320,8 @@
 			}
 		}
 	},
-	"PropertyLabel": {
-		"description": "Property's label in a specific language",
+	"Label": {
+		"description": "A label in a specific language",
 		"headers": {
 			"Last-Modified": {
 				"schema": {
@@ -1348,7 +1346,7 @@
 			"application/json": {
 				"schema": {
 					"type": "string",
-					"example": "instance of"
+					"example": "an example label"
 				}
 			}
 		}
diff --git a/repo/rest-api/specs/resources/labels/label-in-language-for-item.json b/repo/rest-api/specs/resources/labels/label-in-language-for-item.json
index 8042245c747..e6ed879f49e 100644
--- a/repo/rest-api/specs/resources/labels/label-in-language-for-item.json
+++ b/repo/rest-api/specs/resources/labels/label-in-language-for-item.json
@@ -13,7 +13,7 @@
 			{ "$ref": "../../global/parameters.json#/Authorization" }
 		],
 		"responses": {
-			"200": { "$ref": "../../global/responses.json#/ItemLabel" },
+			"200": { "$ref": "../../global/responses.json#/Label" },
 			"304": { "$ref": "../../global/responses.json#/NotModified" },
 			"308": { "$ref": "../../global/responses.json#/Moved" },
 			"400": { "$ref": "../../global/responses.json#/InvalidItemTermByLanguageInput" },
@@ -38,11 +38,11 @@
 		"requestBody": { "$ref": "../../global/requests.json#/Label" },
 		"responses": {
 			"200": {
-				"$ref": "../../global/responses.json#/ItemLabel",
+				"$ref": "../../global/responses.json#/Label",
 				"description": "The updated Label in a specific language"
 			},
 			"201": {
-				"$ref": "../../global/responses.json#/ItemLabel",
+				"$ref": "../../global/responses.json#/Label",
 				"description": "The newly added Label in a specific language"
 			},
 			"304": { "$ref": "../../global/responses.json#/NotModified" },
diff --git a/repo/rest-api/specs/resources/labels/label-in-language-for-property.json b/repo/rest-api/specs/resources/labels/label-in-language-for-property.json
index ec6d4d7248b..49e43678bd2 100644
--- a/repo/rest-api/specs/resources/labels/label-in-language-for-property.json
+++ b/repo/rest-api/specs/resources/labels/label-in-language-for-property.json
@@ -13,12 +13,45 @@
 			{ "$ref": "../../global/parameters.json#/Authorization" }
 		],
 		"responses": {
-			"200": { "$ref": "../../global/responses.json#/PropertyLabel" },
+			"200": { "$ref": "../../global/responses.json#/Label" },
 			"304": { "$ref": "../../global/responses.json#/NotModified" },
 			"400": { "$ref": "../../global/responses.json#/InvalidPropertyTermByLanguageInput" },
 			"404": { "$ref": "../../global/responses.json#/PropertyLabelNotFound" },
 			"412": { "$ref": "../../global/responses.json#/PreconditionFailedError" },
 			"500": { "$ref": "../../global/responses.json#/UnexpectedError" }
 		}
+	},
+	"put": {
+		"operationId": "replacePropertyLabel",
+		"tags": [ "labels" ],
+		"summary": "[WIP] Add / Replace a Property's label in a specific language",
+		"description": "This endpoint is currently in development and is not recommended for production use.",
+		"parameters": [
+			{ "$ref": "../../global/parameters.json#/PropertyId" },
+			{ "$ref": "../../global/parameters.json#/LanguageCode" },
+			{ "$ref": "../../global/parameters.json#/IfNoneMatch" },
+			{ "$ref": "../../global/parameters.json#/IfModifiedSince" },
+			{ "$ref": "../../global/parameters.json#/IfMatch" },
+			{ "$ref": "../../global/parameters.json#/IfUnmodifiedSince" },
+			{ "$ref": "../../global/parameters.json#/Authorization" }
+		],
+		"requestBody": { "$ref": "../../global/requests.json#/Label" },
+		"responses": {
+			"200": {
+				"$ref": "../../global/responses.json#/Label",
+				"description": "The updated Label in a specific language"
+			},
+			"201": {
+				"$ref": "../../global/responses.json#/Label",
+				"description": "The newly added Label in a specific language"
+			},
+			"304": { "$ref": "../../global/responses.json#/NotModified" },
+			"400": { "$ref": "../../global/responses.json#/InvalidSetPropertyLabelInput" },
+			"404": { "$ref": "../../global/responses.json#/PropertyNotFound" },
+			"412": { "$ref": "../../global/responses.json#/PreconditionFailedError" },
+			"415": { "$ref": "../../global/responses.json#/InvalidMediaType" },
+			"500": { "$ref": "../../global/responses.json#/UnexpectedError" }
+		}
 	}
+
 }