Thanks for your response.Let me try to reframe . In my input data set, I have column A and Column B.My requirement is to create a new variable i.e. Column C based on Column B.Eample:100(A) has 5 (B)values 1 to 5.I want to create 5 unique sequences for each 5 rows in Column C.If the data in B is repeated in subsequent rows it will hold the initial value not new value.Now say I have assigned a value for column B ,value B as 2 and column B ,value C as 3, then the program to hold the value 2 and 3. Now for Column B value B and Column B value c we already assigned 2 and 3 each ,so when 101(Column A) is validated it should automatically output 2 and 3 like wise 102 (Column A) it should validate 1 and 5 each rather than assigning new number. Column C is dependent on value at column B.Hope this helps to explain my query.
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