What does attempt to de-reference a null object mean?

What does attempt to de-reference a null object mean?

Description. In Salesforce CPQ, the error ‘Attempt to de-reference null object’ is caused by a line of code that is searching for a value that does not exist because a particular field value is null. This error can also occur when a required Look-up field is missing a record value.

How do I fix a NullPointerException in Salesforce?

Null Pointer Exception in Salesforce

1. The System.
2. To prevent this error from happening, we add a null check on the account object.
3. With this if statement, we will only try to access the objects attribute if the account record is not null.
4. Using a try catch block for null pointer exception.

Why NullPointerException occurs in Salesforce?

The “NullPointerException” is an error in Salesforce which occurs when a line of code is trying to use an object that has not been instantiated or expecting that a field is not empty. In this case, SyncApps was not able to set the field, leaving it empty, so it creates the error.

How check object is null or not in Apex?

“salesforce apex null check” Code Answer

1. // Existing lengthy code checking for null fields.
2. results = [SELECT Name FROM Account WHERE Id = :accId];
3. if (results. size() == 0) { // Account doesn’t exist, isn’t visible, was deleted, etc.
4. return null;
5. }
6. return results[0].
7. // New crisp code using the safe navigation operator.

How do I debug a system in Salesforce?

Use the Log Inspector

1. From Setup, select Your Name > Developer Console to open Developer Console.
2. Select Debug > Change Log Levels.
3. Click the Add/Change link in General Trace Setting for You.
4. Select INFO as the debug level for all columns.
5. Click Done.
6. Click Done.
7. Select Debug > Perspective Manager.

What does it mean to attempt to de-reference a null object?

Failure Message: “System.NullPointerException: Attempt to de-reference a null object”, Failure Stack Trace: “Class.callOut.main: line 70, column 13 External entry point” Someone please help me, I can’t figure out what’s wrong.

Is there problem with null value in map?

Before getting any value from the map it is good if you check containsKey. So here you will not get attempt to de-reference null object error. Yes I understand, but this time, the Map always contains the key I am trying to get. The problem is if the value returned is null, the error will occur. Weird thing is this only occurs in the test class.

How to fix system.nullpointerexception?

So, it’s possible that one of the benefit records is missing value in the ‘Contact__c’ field and you wouldn’t find it in the map. You can solve this in two ways: Add ‘Contact__c != null’ to the selector query if you don’t care about those records.