Process Flat File without fix field

Dear Sir / Madam,

I would like to check if you have idea on how to process / parse CSV file in Software Designer without FIXED column. Meaning, it client can lessen / add fields whenever they want and system should parse it.
Thank you!

For example:
Day 1:

AAA,BBB

Day 2:
AAA, BBB, CCC

Hi Wilmor,

For this you should create number of possible fields in the schema.
And all the fields should be set mandatory to false.

Thanks,
Mario Roche