Gmna cara mengembalikan semua data sy yg hilang

data syInternal system fields are intended purely for internal use in the ABAP runtime framework and in the kernel. They must never be overwritten in an ABAP program and they should not beI have read many of previous postings relkated to a sy-subrc = 8 that I am getting when trying to open a dataset. Some say dataset name is too long, I do not have authority,