{"text_format":"3","workbook":"xls","n_sheets":3,"sheets":["Sheet1","Sheet2","Sheet3"],"read":"whole","date_system":"1900","formulas":"cached_only"}

{"sheet":"Sheet1","index":0,"n_rows":21,"n_cols":2,"rows_kept":21,"flags":["formulas_cached_only"]}
["Error Code","Error Description"]
[3940,"Invalid or missing request_id"]
[3941,"Parameter list does not match request_id"]
[3943,"Invalid Network Point"]
[3944,"Invalid Category"]
[959,"Invalid Logon"]
[3946,"Invalid Gas Day"]
[3947,"File contains the wrong number of nomination lines for this contract and gas day range"]
[3951,"Gas Day End is before Gas Day Start"]
[3952,"Gas Day Start must be in the future"]
[3939,"Invalid Contract"]
[3956,"Cannot nominate multiple gas days for a single gas day contract"]
[3955,"Invalid User for Contract"]
[-20527,"Nominations may not be entered this far in advance"]
[2240,"Data supplied with invalid number formats."]
[3954,"Invalid Rule"]
[3938,"Nomination creation failed"]
[3937,"XML validation failed"]
[3942,"XML parsing error"]
[3957,"File contains too many nomination lines containing network point: <network point code>"]
[3958,"File contains too many nomination lines containing category: <category code>"]

{"sheet":"Sheet2","index":1,"n_rows":0,"n_cols":0,"rows_kept":0,"flags":["formulas_cached_only"]}

{"sheet":"Sheet3","index":2,"n_rows":0,"n_cols":0,"rows_kept":0,"flags":["formulas_cached_only"]}