While creating a dynamic APPL RDTE during an OPEN ACB, VTAM® attempted to allocate a network address for the resource. However, VTAM had already allocated the maximum number of network addresses in the host subarea. Therefore, VTAM failed to define a new network address for the resource.
VTAM fails the OPEN ACB. The ACBERFLG field is set to X'14'.
Deactivate any unneeded major nodes in the host subarea to free network addresses, and then have the application OPEN the ACB again. If VTAM continues to issue this message, save the system log for problem determination. See the VARY INACT command in z/OS Communications Server: SNA Operation for more information.
Check the output provided by the operator to ensure that all requirements for VTAM are correct for your system.
Because the maximum number of elements that can be assigned by VTAM in the host subarea has been reached, examine the possibility of allocating devices and applications to other subareas.
You can increase the number of available host subarea element addresses by allowing the use of high-order element addresses for some resources. To enable the use of high-order element addresses, specify YES for the ENHADDR start option. Modify the start options file (ATCSTRxx) and restart VTAM to use the start option. See the information about increasing host subarea element addresses in z/OS Communications Server: SNA Network Implementation Guide.
Not applicable.
Not applicable.
z/OS® Communications Server TCP/IP: SNA
You can display the module that issues a SNA message in the message by setting the MSGMOD start option to YES. See Adding the originating module to the message textfor more information about the MSGMOD start option.
2
5
Not applicable.
IST2318I UNABLE TO OPEN APPL1 - NETWORK ADDRESS LIMIT REACHED