I have an Excel file saved on a SharePoint site that currently has 250,000 unique records. It is connected to a Power App. In my Power App, there is a text input where the user can input a 20-digit call number. However, using the LookUp function to test it, it is not returning the correct result.
Using LookUp(data, call_number = "00001138921663156830", call_number) should return "00001138921663156830", which is in the Excel file. However, when I change the string to:
LookUp(data, call_number = "00001138921663156831", call_number), it still returns the call_number in the file (i.e., 00001138921663156830. It shouldn't return anything for the string ending in a 1 since that call_number is nowhere in the Excel file.
It seems like the LookUp function is not comparing the entire 20 character length string. How can I fix this?

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