3334667 - Repserver error while replicating bulk data to Sybase IQ target database with ERROR #151 - SRS

While replicating data to IQ, SRS reports below error:

E. 2023/04/15 01:43:15. ERROR #151 DSI EXEC(128(1) XXX_IQ.DB1) - /generic/dsi/hqocs.c(1716)
        Bulk-Lib routine 'RCIExecute' failed.
E. 2023/04/15 01:43:15. ERROR #1027 DSI EXEC(128(1) XXX_IQ.DB1) - /generic/dsi/hqocs.c(1716)
        Open Client Client-Library error: Error: 84083975, Severity 5 -- 'ct_send(): network packet layer: internal net library error: Net-Lib protocol driver call to write data failed', Operating System error 104 -- 'Socket send failed - errno 104 Connection reset by peer'.
T. 2023/04/15 01:43:15. (409): HQCPL: HQ execution exception occurred while applying to table [nil][nil]...
E. 2023/04/15 01:43:16. ERROR #1027 DSI EXEC(128(1) XXX_IQ.DB1) - /generic/useful/cm.c(6374)
        Open Client Client-Library error: Error: 84083972, Severity 5 -- 'ct_connect(): network packet layer: internal net library error: Net-Lib protocol driver call to connect two endpoints failed', Operating System error 111 -- 'Socket connect failed - errno 111 Connection refused'.
E. 2023/04/15 01:43:16. ERROR #13045 DSI EXEC(128(1) XXX_IQ.DB1) - /generic/useful/cm.c(6379)
        Failed to connect to server 'XXX_IQ' as user 'user1'. See CT-Lib and/or server error messages for more information.
I. 2023/04/15 01:43:16. Trying to connect to server 'XXX_IQ' as user 'user1' ......
E. 2023/04/15 01:43:31. ERROR #1028 DSI EXEC(128(1) XXX_IQ.DB1) - /generic/useful/cm.c(5349)
        Message from server: Message: -100, State 0, Severity 16 -- 'SQL Anywhere Error -100: Database server not found'.
E. 2023/04/15 01:43:31. ERROR #1027 DSI EXEC(128(1) XXX_IQ.DB1) - /generic/useful/cm.c(5349)
        Open Client Client-Library error: Error: 67175468, Severity 4 -- 'ct_connect(): protocol specific layer: external error: The attempt to connect to the server failed.'.
E. 2023/04/15 01:43:31. ERROR #13045 DSI EXEC(128(1) XXX_IQ.DB1) - /generic/useful/cm.c(5353)
        Failed to connect to server 'XXX_IQ' as user 'user1'. See CT-Lib and/or server error messages for more information.
I. 2023/04/15 01:43:31. The DSI thread for database 'XXX_IQ.DB1' is shutdown.

• SAP Replication Server (SRS) 16.0
• SAP Replication Server Real Time Loading (RTL) 16
• SAP IQ/16.1.050.1950/11136/P/SP05.03/Linux/Linux64 - x86_64

replication to IQ, ERROR #151 , KBA , BC-SYB-REP , Sybase Replication Server (standalone) , Problem