Workaround for duplicate entries in list

Hello,

i’m a newbie here. i’m really having a hard time understanding that list can’t have duplicate entries. I already read in the forum some people suggest to use scheduled API workflow, is there simple solution for this ?
my problem is, when someone fill the quantity for each product with same value, it’s not recorded in the database.
please help me with the easiest solution, i’m not an expert in coding, i just learned about bubble in a few days

Thanks

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