This is the minimum amount needed to be able to invest in any financial product (fixed income, investment funds, ETFs, etc.) for the first time.
This is important information to bear in mind because if you transfer capital from one investment fund to another and the amount transferred is less than the minimum contribution required by the destination fund, the transfer may be declined. The minimum investment in a fund can be denominated as an amount in euros or a number of units.
Number of units: in monetary terms, the cost of investing in a fund that requires a minimum investment of one unit depends on the price of the units.