RETRIEVE,
    CLASS      = RD,
    TYPE       = AN,
    STREAM     = OPER,
    EXPVER     = aaaa,
    REPRES     = SH,
    LEVTYPE    = PL,
    LEVELIST   = 1000/850/700/500/400/300,
    PARAM      = 129,
    DATE       = 20250413,
    TIME       = 1200,
    STEP       = 0,
    DOMAIN     = G,
    TARGET     = data.reference 