I am running again in an issue where I cannot create pages from more than 6 different blueprints in a single space. I have documented this in more detail already at Issue when using too many Blueprints on Confluence 9
I can reproduce this issue on 9.1.0. After creating the 7th page using different Atlassian Confluence Blueprints, I get an error:
com.opensymphony.module.propertyset.IllegalPropertyException: String exceeds 255 characters.
at com.opensymphony.module.propertyset.AbstractPropertySet.setString(AbstractPropertySet.java:365)
The property is stored with key createdBlueprints.
Can someone confirm this?
EDIT: Seems that the list of createdBlueprints is per user and site, not per user and space.