Checking two columns and grouping to validate entries - google-apps-script

Question

I have data sheet as below-
I am trying to check for values in column Count of deletions if it is empty or not a number to flag an error at an account level,
because there will be only one entry of Count of deletions which will be at the first row entry of Account ID (unique) as illustrated in the pic above.
I did this to just validate the column Count of deletions
function myFunction() {
SS = SpreadsheetApp.getActiveSpreadsheet();
var sheet = SS.getSheetByName("Sheet1");
var Validation_sheet = SS.getSheetByName("Sheet2");
var last_row = sheet.getLastRow();
var values = sheet.getRange(2,5,last_row).getValues();
var Status_values = sheet.getRange(2,4,last_row).getValues();
var result = isnumberorEmpty(values, Status_values);
const Count_setvalue = Validation_sheet.getRange("A2");
var errors_c = [];
for (key in result){
var check1 = result[key] == "empty";
var check2 = result[key] == "Not a number";
if(check1 == true || check2 == true){
errors_c.push(key);
}
}
if (errors_c.length > 0){
Count_setvalue.setValue("Row(s) " + errors_c.join(" and ") + " have error");
}
else{
Count_setvalue.setValue("No errors");
}
}
function isnumberorEmpty(array, array1) {
let result = {};
for (let i = 0; i < array.length-1; i++) {
if( array1[i] == "Completed"){
let row = array[i];
if (row[0] === "") {
result[i+2] = "empty";
}
else if (row[0] === "Ignored") {
result[i+2] = "No error";
}
else if (!isNaN(row[0])) {
result[i+2] = "number";
}
else {
result[i+2] = "Not a number";
}
}
else{
}
}
return result;
}
The above checks for column Count of deletions and validates only where corresponding rows in column Status has Completed.
The output will show me error for rows, 8 and 10-18,
but it should not as the values are entered at the account level.
However, there should be error for only Account4 and Account5, meaning the error should be only for Row 16 and row 18 as below -

Answer 1

From your updated question, I thought that the reason for your current issue might be due to that you checked columns "D" and "E". In order to achieve However, there should be error for only Account4 and Account5, meaning the error should be only for Row 16 and row 18 as below -, how about checking the columns "A", "D" and "E"? In this case, how about the following sample script?
Sample script 1:
function myFunction1() {
const ss = SpreadsheetApp.getActiveSpreadsheet();
// Process in the source sheet.
const srcSheet = ss.getSheetByName("Sheet1");
const values = srcSheet.getRange("A2:E" + srcSheet.getLastRow()).getDisplayValues();
const { errors_c } = values.reduce((o, r, i) => {
if (i == 0 || o.temp != r[0]) {
o.temp = r[0];
if (r[3] == "Completed" && !r[4]) {
o.errors_c.push(i + 2);
}
}
return o;
}, { errors_c: [], temp: "" });
// Process in the destination sheet.
const dstRange = ss.getSheetByName("Sheet2").getRange("A2");
if (errors_c.length > 0) {
dstRange.setValue("Row(s) " + errors_c.join(" and ") + " have error");
} else {
dstRange.setValue("No errors");
}
}
In this modification, the columns "A", "D" and "E" are checked.
When this script is tested to your sample input Spreadsheet, Row(s) 16 and 18 have error is put to the cell "A2" of "Sheet2".
Sample script 2:
Although unfortunately, I'm not sure whether I could correctly understand your expected result, if you want to check all values of column "D" for each "Account ID", how about the following sample script?
function myFunctionc2() {
const ss = SpreadsheetApp.getActiveSpreadsheet();
// Process in the source sheet.
const srcSheet = ss.getSheetByName("Sheet1");
const values = srcSheet.getRange("A2:E" + srcSheet.getLastRow()).getDisplayValues();
const obj = values.reduce((m, r, i) => m.set(r[0], m.has(r[0]) ? { v: [...m.get(r[0]).v, r[3]], i: m.get(r[0]).i } : { v: [r[3]], i: i + 2 }), new Map()).values();
const errors_c = [...obj].reduce((ar, { v, i }) => {
if (v.every(e => e == "Completed") && !values[i - 2][4]) {
ar.push(i);
}
return ar;
}, []);
// Process in the destination sheet.
const dstRange = ss.getSheetByName("Sheet2").getRange("A2");
if (errors_c.length > 0) {
dstRange.setValue("Row(s) " + errors_c.join(" and ") + " have error");
} else {
dstRange.setValue("No errors");
}
}
Reference:
reduce()