I note that the error messages have prefix characters ASMA, and your source file's name includes HERCULES.
001668 00000000 2776 WS_LENGTH DC A(WS_LEN) ** ASMA032E Relocatable value or unresolved symbol found when absolut ** ASMA435I Record 698 in IBMUSER.HERCULES.SERVER(HRTCPRD) on volume: 00166C 00000001 2777 WS_LEN1 DC A(L'WS_LEN) ** ASMA019W Length of EQUated symbol WS_LEN undefined; default=1 ** ASMA435I Record 699 in IBMUSER.HERCULES.SERVER(HRTCPRD) on volume: Are you running an unlicensed copy of HLASM on HERCULES? Regards... John Ehrman
