Creating variable that links individuals to their respective households

Hi guys,

Thanks for accepting me into this group. I hope I can learn from all of you

I have an assignment which consists on the following. I merged two datasets. One contained household data and the other individual data. The data is about expenditure on several specific items/variables (clothes, food, transport, tobacco, etc). The problem is that there is no variable that links a specific individual to a specific household, and I need that info to know individual expenditure. I don’t know if it’s possible to create one. I would really appreciate some help to solve this problem.

Thank you very much.