Two Different Knowledge Articles have the same KB NumberIssue Two Different Knowledge Articles have the same KB Number.ResolutionAlthough it's rare, this issue can happen when the Knowledge Articles are in different Knowledge Bases. Unique numbering is not enforced on the platform by default. To fix this, you can create a Before Insert Business Rule on the Knowledge Table (kb_knowledge) to ensure the new number is not already in use. Please find the documentation with more details about this behaviour: https://docs.servicenow.com/csh?topicname=knowledge-article-duplicate-numbers.html&version=latest To enforce unique numbering, please find the guidance in the following documentation: https://docs.servicenow.com/csh?topicname=c_EnforcingUniqueNumbering.html&version=latest