This Error can occur for one of the following two reasons:
Your Broker may need to grant you Add/Edit permissions.
- You can have them fill out an Add/Edit form for you by going to Forms and Contracts from the MLS Portal > MLS Membership Forms > MLS Add/Edit Form
If you have changed offices (or even just branches within the same office) the Listing Office of your listing will need to be adjusted and is why you are unable to edit your listing. In this case the active Listing Broker will need to transfer the listing to the correct Listing Office that you have transferred to.