Note: For VTAM to dynamically alter the structure size, the SIZE value must be larger than the value of INITSIZE. The structure alter process is initiated to change the structure size when the current in-use percentage of total storage reaches 90 percent and the maximum size is greater than the current size. When the size has reached the value of SIZE attribute, the policy must be changed and an alter or rebuild command issued to incorporate the changes. Set the ALLOWAUTOALT parameter on the CFRM policy for VTAM or TCP/IP structures to ALLOWAUTOALT(NO) (or allow the ALLOWAUTOALT parameter to default to NO) to prevent MVS™ attempts to resize the structure from conflicting with VTAM re-sizing events.