GPZ (ABAP) - Not Enough Dialog Resources (GPZ asgpz01_GPZ_00 (ABAP_SRV))
Root cause: 
The ABAP instance had limited or no resources left for dialog processing, as indicated by the alert details showing 1 long-running dialog work process with a minimum runtime of 1200 and no maximum runtime specified.  
 
Resolution steps: 
Checked the work process status using transaction SM50 . all the Dialog WP are free.. 
Analyzed user sessions using transaction SM04 to determine if excessive or lingering sessions were contributing to resource exhaustion. No issues seen.