I'm going through my normal routine of taking some SDE data and savings an offline service definition, loading it into ArcGIS Server Manager, and then adding the REST URL to AGOL as a hosted layer. I've done this dozens of times with no issue, but now today when I drop the REST URL into the new item URL, I get back an error "Service does not exist or is inaccessible." and I'm not able to move forward. If I use a URL from a previously created hosted layer I get the same error, despite it setting up fine previously. All of my other hosted layers are visible in AGOL without issues. Does anyone have an idea of why this specific one might be a problem? Thank you!