fix: schema definition POSTLivechatSaveCustomFieldsSchema

Author: d-gubert

apps/meteor/app/livechat/server/api/v1/customField.ts

@@ -111,10 +111,6 @@ const livechatCustomFieldsEndpoints = API.v1
 		async function action() {
 			const { customFieldId, customFieldData } = this.bodyParams;
 
-			if (!/^[0-9a-zA-Z-_]+$/.test(customFieldId)) {
-				return API.v1.failure('Invalid custom field name. Use only letters, numbers, hyphens and underscores.');
-			}
-
 			if (customFieldId) {
 				const customField = await LivechatCustomField.findOneById(customFieldId);
 				if (!customField) {

packages/rest-typings/src/v1/omnichannel.ts

@@ -4445,12 +4445,15 @@ const POSTLivechatSaveCustomFieldsSchema = {
 	properties: {
 		customFieldId: {
 			type: 'string',
+			pattern: '^[0-9a-zA-Z-_]+$',
+			nullable: true,
 		},
 		customFieldData: {
 			type: 'object',
 			properties: {
 				field: {
 					type: 'string',
+					pattern: '^[0-9a-zA-Z-_]+$',
 				},
 				label: {
 					type: 'string',