JUMP TOINTRODUCTIONIntroductionAuthenticationErrorsWhatsApp ErrorsRate LimitsPaginationRequest IDsVersioningChangelogDeveloper ToolsOpenAPISDKsYCloud APIBalanceRetrieve balancegetContactsCreate a contactpostList contactsgetRetrieve a contactgetUpdate a contactpatchDelete a contactdeleteCustom EventsCreate an event definitionpostRetrieve an event definitiongetUpdate an event definitionpatchCreate an event property definitionpostUpdate an event property definitionpatchDelete an event property definitiondeleteSend an eventpostEmailsSend an emailpostSMSSend an SMSpostList SMS recordsgetUnsubscribersCreate an unsubscriberpostList unsubscribersgetList all unsubscribers by customergetRetrieve an unsubscribergetDelete an unsubscriberdeleteVerifyStart a verificationpostCheck a verificationpostVoicesSend a voice codepostList voice recordsgetWebhook EndpointsCreate a webhook endpointpostList webhook endpointsgetRetrieve a webhook endpointgetUpdate a webhook endpointpatchDelete a webhook endpointdeleteRotate a webhook endpoint secretpostWhatsApp Business AccountsList WABAsgetRetrieve a WABAgetWhatsApp Inbound MessagesMark message as readpostWhatsApp MessagesSend a message directlypostEnqueue a messagepostRetrieve a messagegetWhatsApp Phone NumbersList phone numbersgetRetrieve a phone numbergetRetrieve a phone number profilegetUpdate a phone number profilepatchRetrieve commerce settingsgetUpdate commerce settingspatchRegister a phone numberpostWhatsApp TemplatesCreate a templatepostList templatesgetDelete templates by namedeleteDelete a templatedeleteEdit a templatepatchRetrieve a templategetWebhooksConfigure WebhooksWebhook Events & PayloadsWebhook Payload ObjectTest webhookspostExamplesAPI & Webhook ExamplesAPI Request ExamplesWhatsApp Template Creation ExamplesWhatsApp Messaging ExamplesWebhook Payload ExamplesWhatsApp Template Reviewed Webhook ExamplesWhatsApp Message Updated Webhook ExamplesWhatsApp Inbound Message Webhook ExamplesWhatsApp Business Account Updated Webhook ExamplesWhatsApp Payment Updated Webhook ExamplesPowered by Update an event property definitionpatch https://api.ycloud.com/v2/event/definitions/{name}/properties/{propertyName}Updates an event property definition's label and description.