BPE header format
The BPE header is a recurring structure in messages that are handled by IMS Connect.
The following table lists the fields in the BPE header layout. This topic contains Product-sensitive Programming Interface information.
Field | Length | Meaning |
---|---|---|
llll | 4 bytes | The length of the total structure and it is set for the first BPE header only. This field is managed by IMS Connect and must not be altered by the exit. |
CHAIN PTR | 4 bytes | The chain pointer to
the next BPE header within this message. The last BPE header in the
message must have binary zeros as a chain pointer value to denote
the end of the BPE headers within the message. These chain pointers are set by the user-written client application exit routine. |
STORAGE TYPE | 8 bytes | This field is managed by IMS Connect and should not be modified by the user exit. |
TYPE ACCESS | 4 bytes | This field is managed by IMS Connect and should not be modified by the user exit. |
SUBPOOL | 1 byte | This field is managed by IMS Connect and should not be modified by the user exit. |
Reserved | 43 bytes | This field is managed by IMS Connect and should not be modified by the user exit. |