This error is caused by the size of media files already attached to the constituent record.  Follow one of the solutions below to resolve this error when embedding additional media files:
  • Remove older media files from this record and store in a central location in order to still have access to the files.
  • Link the media files instead of embedding them on the constituent record.
  • Create a second record for this constituent and mark the previous record as Inactive.  You can then continue to track all activity for this organization as well as add media files on the new constituent record.