Error checking using multiple yes / No responses

I am working on a form the user fills out to creat a document. Once the create document is pressed, the form will check to see if the user has forgotten to account for any equipment that may be required but forgotten to add. I am trying to use simple yes or no answers to allow the script to end so they can go back and make corrections if needed. The code works great if the response is triggered, not so great if the conditions are not met. Is there a way to simplify this so the program continues if the conditions are not met?

Here is the section I am having trouble with:

// Ensures that High-Pressure Pumps are assigned if required;

if ((p1480.value === 0)&&(p1800.value === 0)&&(p2200.value === 0)&&(p3600.value === 0)&&(c800.value === 0)&&(c3000.value === 0)){

var hppans = app.alert({cMsg:"No High-Pressure Pumps are assigned to this sulfide Job.\n\n" + "Please acknowledge this is correct.",nIcon:2,nType:2 });
}

// User Pressed Yes;
else if(hppans === 4){


// Ensures that H2S Analyzers are assigned if required;
if ((c1d1.value === 0)&&(c1d2.value === 0)&&(scan.value === 0)){

var h2sans = app.alert({cMsg:"No H2S Analyzers are assigned to this sulfide Job.\n\n" + "Please acknowledge this is correct.",nIcon:2,nType:2 });
}

// User Pressed Yes;
if(h2sans === 4){

// Ensures that OTIS Unit are assigned if required;
if (otis.value === 0){

var otisans = app.alert({cMsg:"No OTIS Units are assigned to this sulfide Job.\n\n" + "Please acknowledge this is correct.",nIcon:2,nType:2 });
}

// User Pressed Yes;
if(otisans === 4){

var nser1 = app.alert ({cMsg:"The Technical Package is about to be created.\n\n" + "Have you verified that all information entered is correct?",nIcon:2,nType:2 });

// User Pressed Yes;
if(nser1 === 4){