2999453 - Error 10353 when executing sp_sysmon due "mon_role" not granted - SAP ASE

The execution of sp_sysmon reports the following error:

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Msg 10353, Level 14, State 26:
Server 'asesp03pl9', Procedure 'sp_sysmon_collect', Line 141:
You must have any of the following role(s) to execute this command/procedure: 'mon_role' . Please contact a user with the appropriate role for help.
Command has been aborted.

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The user who is executing has the roles:

- sa_role (default ON)
- sso_role (default ON)
- mon_role (default ON)

SAP ASE 16.0 SP03 PL08

sp_sysmon sp_sysmon_collect mon_role 10353 locked , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Problem