The first and most basic level of validation is run automatically asyou build up your observing project. In filling out the various forms,if any parameter for your observing project contains a non-permittedvalue, this value will either turn red or a pop-up window willappear. The pop-up window provides the user with information why theinput is wrong and gives suggestions how to fix the problem. Examplesare non-numerical input for the source velocity, a negative frequency,a too large bandwidth or a target at a non-accessible declination.