After increasing the Dynamic Volume Count in the SMS DATACLAS attribute, started getting the following allocation error:
C1A0010E ALLOCATION ERROR RC=970C-4377
From IBM Knowledge Center:
4377 (17271)Meaning: A request was made to allocate a SMS-managed, non-VSAM, non-guaranteed-space data set. The volume count specified (or derived from the data class) is greater than the number of available online volumes in any of the storage groups that were selected.
Application Programmer Action: Reduce the volume count and reissue the request, or contact the system programmer for assistance.
System Programmer Action: Add volume to the storage group, or ensure the storage group selected has a sufficient number of available online volumes.
To resolve the problem reduce the DYNVOL COUNT in the SMS attribute.