Hi @annajhaveri :
First of all,according to your description, this app needs to connect to 750 (50*15) data sources. This may be difficult to achieve, because the official recommendation is "Don't connect to more than 30 data sources from the same app."
I think this link will help you a lot:
Limit data connections
Secondly,one Form cannot support multiple data sources, so I am afraid your request cannot be fulfilled.
For example:
If I set the form control's DataSource property to:
Library1
It is fine.
If I set the form control's DataSource property to:
If(
condition1,
Library1,
condition2,
Library2,
condition3,
Library4
)
Although this will not cause any error, but this form will not work normally.
Best Regards,
Bof