Use the FILLEDOUTLINEDMARKERS=TRUE option on the SCATTERPLOT statement. You must use this option with a filled marker. You can then control the fill and outline independently. In your case, you have a grouped scatter where you just want to "fill the hole" with the wall color. Use the following options on the SCATTERPLOT statement.
Registration is open! SAS is returning to Vegas for an AI and analytics experience like no other! Whether you're an executive, manager, end user or SAS partner, SAS Innovate is designed for everyone on your team. Register for just $495 by 12/31/2023.
If you are interested in speaking, there is still time to submit a session idea. More details are posted on the website.