When a structure is allocated, the coupling facility sets the maximum structure size equal to the structure size specified in the CFRM active policy. The maximum structure size value remains constant as long as this instance of the structure remains allocated. However, the actual structure size might be less than the maximum structure size value. A smaller size could occur because:

• INITSIZE was specified in the CFRM active policy with a smaller size
• STRSIZE was specified on an IXLCONN macro with a smaller size
• Storage constraints exist in the coupling facility
• A previous structure alter reduced the structure size.