Add Error Handling Wrapper

Core ServiceNow APIs/GlideRecord/Error Handling Wrapper/README.md

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+# GlideRecord Error Handling Wrapper
+
+## Description
+This snippet provides a **safe execution wrapper** around GlideRecord queries.  
+It helps avoid runtime errors due to invalid table names, malformed queries, or null references, and ensures graceful script continuation.
+
+---
+
+## Note
+- Works in global or scoped applications.
+- Suitable for Background Scripts, Business Rules, or Script Includes.
+- Prevents script termination from invalid GlideRecord calls.
+
+--- 
+
+## Functionality
+1. Validates table existence using `isValid()`.
+2. Wraps GlideRecord operations in a `try...catch` block.
+3. Logs detailed error messages via `gs.error()`.
+4. Allows the developer to safely pass a callback for query operations.
+
+---
+
+## Usage Example
+```js
+safeQuery('incident', function (gr) {
+    gr.addQuery('priority', 1);
+    gr.query();
+    while (gr.next()) {
+        gs.info('High-priority Incident: ' + gr.number);
+    }
+});
+```
+
+## Output
+```
+High-priority Incident: INC0012345
+High-priority Incident: INC0012346
+```

Core ServiceNow APIs/GlideRecord/Error Handling Wrapper/safeQuery.js

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+/**
+ * GlideRecord Error Handling Wrapper
+ * Safely executes GlideRecord queries and catches runtime errors such as invalid table names or malformed queries.
+ * Logs detailed error information and ensures the script continues gracefully.
+ */
+
+function safeQuery(table, queryCallback) {
+    try {
+        var gr = new GlideRecord(table);
+        if (!gr.isValid()) {
+            gs.error('Invalid table name: ' + table);
+            return;
+        }
+
+        queryCallback(gr);
+    } catch (e) {
+        gs.error('Error executing GlideRecord query on table "' + table + '": ' + e.message);
+    }
+}
+
+// Example usage:
+safeQuery('incident', function (gr) {
+    gr.addQuery('active', true);
+    gr.query();
+    while (gr.next()) {
+        gs.info('Incident: ' + gr.number);
+    }
+});