Use the fields in the exit parameter list, IXZ$XPL, to manage the storage you obtain for exits IXZXIT01 and IXZXIT02 to use. For example:

1. Bits XIT03_CONNECT and XIT03_DISCONNECT, in the IXZXIT03-specific section of IXZ$XPL, determine whether this processing is part of attach or detach processing. (In this example, assume that XIT03_CONNECT is set to indicate attach processing.)
2. Obtain storage for exits IXZXIT01 and IXZXIT02.
3. Turn on the XIT03_INSTALL bit in the base section of IXZ$XPL to inform JES XCF that exit IXZXIT03 has obtained storage for IXZXIT01 and IXZXIT02.
4. Set the XIT03_INSTALLATION field in the IXZXIT03-specific section to the address of the storage.

When IXZXIT01 or IXZXIT02 receives control, the address of the data area is in the XPL_INSTALL_DATA field in the base section of IXZ$XPL.

Because IXZXIT03 obtained storage for the installation data area from common storage, the installation data area is addressable by all the JES XCF exits.