CPRI specification - Key = '003A'

DALCPRI specifies the relative priority to be given to sending and receiving operations. It is mutually exclusive with the THRESH key (DALTHRSH). When you code DALCPRI, # and LEN must be one, and PARM contains one of the following values:
X'01'
Send priority (S)
X'02'
Equal priority (E)
X'04'
Receiving priority (R)
Example: To specify equal priority, code:
KEY    #      LEN    PARM
003A   0001   0001   02