While converting the excel file into xml (online) format the variable names those have underscore (eg- hh_name), for them the following error is coming "Google Sheets submissions don't allow underscores in the column name. If you intend to use Google Sheets submissions, replace underscores with hyphens in the following names: section_A, basic_info". However the file is finally being converted into xml and the odk is working properly. My question is that whether this will create any problem in future, like force stop, submission difficulties, problem in data downloading etc.? I have attached a screen short of the error.
I am using excel sheet for the programming and convert it to xml (Online).