This KBA will clarify the exact Length of an Item ID which is created using Item Connector.
-Learning Management System
1. If an Item created through LMS UI than the maximum Length that we can use is 30 chars.
2. If the same item created via Item Connector than the maximun length that we can use is 90 Chars.
KBA , LOD-SF-LMS , Learning Management System , LOD-SF-LMS-CON , Connectors , How To