PFB (ABAP) - Not Enough Dialog Resources (PFB aspfb00_PFB_00 (ABAP_SRV))
Root cause: 
The ABAP instance had limited or no resources left for dialog processing, resulting in a 'Not Enough Dialog Resources' alert. This was indicated by the metric details showing 1 long-running dialog work process with a minimum runtime of 1200 seconds.  
 
Resolution steps: 
Checked the work process status using transaction SM50 and there are enough Dialog WP. 
Analyzed user sessions with transaction SM04 to determine if excessive or lingering sessions were contributing to resource exhaustion.