Issue in field while using concatenation formula

[Boa_Casa]

Hi,

I have a field “Total Amount AB” in my table in which I am concatenating various amount values from my table for different products so the issue I am facing is adding measurement part for one the product even though it does not have any relation with this field the said total amount field is getting updated with some values. I am adding all the relevant screenshot if someone could help why is this happening. Also adding screen shot of the formula added for the field for concatenation of various coulmns.