Data overflow error when the "List.Accumulate" function was used to process data over 2000 rows

[ziying35]

My Source Table:

Source Table

Desired Table:

Desired Table

Based on the Source Table, insert the missing "SN" with a value of 0, My M code as below:

let
    Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
    rows = List.Buffer(Table.ToRows(Source)),
    acc = List.Accumulate(
              rows,
              {"", {}},
              (s,c)=>if s{0}="" then {c{0}, {c}}
                     else if s{0}+1=c{0} then {c{0},s{1}&{c}}
                          else {c{0}, s{1}&List.Transform({s{0}+1..c{0}-1}, each {_,0})&{c}}
          ),
    result = Table.FromRows(acc{1}, Table.ColumnNames(Source))
in
    result

When my data volume is less than 2000 lines, I use the List.Accumulate function to handle, the code is running properly, the data volume is more than 2000 lines, there will be a stack overflow error, Using just the List.Accumulate solution, is there a way to get code to work properly with more than 2,000 lines of data.

Thank in advance

the link to my excel file: Insert Missing SN