ArcGIS Experience Builder 's Embed widget currently allows you embed content by URL or code. Due to compliance requirements, we will restrict the option on embed by code. So only a limit set of HTML will be supported by this option. This will affect your existing apps in ArcGIS Online that use this feature. Please read the blog below for detailed information about its impact and solutions we recommend.
Compliance Requirements on Embedded Content by Code in ArcGIS Experience Builder
In addition, we have sent email notifications to the administrators of ArcGIS Online organizations that use this feature in their existing apps.
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