TDP0880 REQUESTED POOL ALREADY EXISTS (ID: 'poolid')
Explanation:
TDP was unable to process a START POOL command because the characteristics are identical to those of a pool which is already running. If a JOBNAME was not specified, the LOGON argument matched that of an existing unrestricted pool. If the JOBNAME was specified, both the jobname and the logon matched that of an existing restricted pool.
Generated By:
TDP.
Notes:
None. Remedy: If necessary, correct and reissue the command.