0x005700B0 (5701808) The SEND function failed. No application return code is available.

Explanation
A stored procedure program attempted to communicate with
a remote system such as IMS or CICS. An APPC SEND was requested. The connection
must be established previously by using the OPEN function. 

User response
Check the target (remote) system for error or abend messages.
Verify that the OPEN request was properly run. Check for errors or other messages
in the system log and job output for both the local task (data server) and
remote task (CICS, IMS).