Use CICS_ExternalCall for making program link calls, status information calls, and reply solicitation calls. Use the ECI parameter block (ECI_PARMS for C and ECI-PARMS for COBOL) for passing parameters to the ECI. The eci_call_type parameter in the ECI parameter block indicates the type of CICS_ExternalCall. The following examples show the format of the request and associated declarations:
ECI_PARMS EciBlock; cics_sshort_t Response; . . . Response = CICS_ExternalCall(&EciBlock);
CALL CICSEXTERNALCALL USING BY REFERENCE ECI-PARMS RETURNING ECI_ERROR_ID.