NS import: add CustomRecordSearchAdvanced example

Author: mrtnzlml

docs/learn/netsuite/import-configuration.md

@@ -689,7 +689,9 @@ Sometimes, it can be handy to import just one specific record:
 
 ## Using advanced transaction search
 
-Using `TransactionSearchAdvanced` can be beneficial if we want to select which fields should be fetched from NetSuite (to lower the payload size as well as data storage requirements). Additionally, it can be useful to fetch additional columns such as `createdFromJoin` or `applyingTransactionJoin` and similar.
+Advanced search can be beneficial if we want to select which fields should be fetched from NetSuite (to lower the payload size as well as data storage requirements). Additionally, it can be useful to fetch additional columns such as `createdFromJoin` or `applyingTransactionJoin` and similar.
+
+### `TransactionSearchAdvanced`
 
 :::info
 
@@ -774,6 +776,79 @@ Advanced transaction search requires 'Transactions → Find Transaction' permiss
 }
 ```
 
+### `CustomRecordSearchAdvanced`
+
+```json
+{
+  "payload": {
+    "method_args": [
+      {
+        "columns": {
+          "basic": {
+            "created": {},
+            "recType": {},
+            "externalId": {},
+            "internalId": {},
+            "isInactive": {},
+            "lastModified": {},
+            "customFieldList": {
+              "_ns_type": "SearchColumnCustomFieldList",
+              "customField": [
+                {
+                  "_ns_type": "SearchColumnStringCustomField",
+                  "scriptId": "custrecord_2663_entity_bic"
+                },
+                {
+                  "_ns_type": "SearchColumnStringCustomField",
+                  "scriptId": "custrecord_2663_entity_iban"
+                },
+                {
+                  "_ns_type": "SearchColumnStringCustomField",
+                  "scriptId": "custrecord_2663_entity_branch_no"
+                },
+                {
+                  "_ns_type": "SearchColumnStringCustomField",
+                  "scriptId": "custrecord_2663_entity_acct_no"
+                },
+                {
+                  "_ns_type": "SearchColumnStringCustomField",
+                  "scriptId": "custrecord_2663_entity_acct_suffix"
+                }
+              ]
+            }
+          },
+          "_ns_type": "CustomRecordSearchRow"
+        },
+        "_ns_type": "CustomRecordSearchAdvanced",
+        "criteria": {
+          "basic": {
+            "recType": {
+              "internalId": 854
+            },
+            "lastModified": {
+              "operator": "onOrAfter",
+              "searchValue": "{last_modified_date}"
+            },
+            "_ns_type": "CustomRecordSearchBasic"
+          },
+          "_ns_type": "CustomRecordSearch"
+        }
+      }
+    ],
+    "method_name": "search",
+    "method_headers": {
+      "searchPreferences": {
+        "pageSize": 100,
+        "bodyFieldsOnly": false,
+        "returnSearchColumns": true
+      }
+    }
+  },
+  "master_data_name": "NS_BankDetail_v1",
+  "advanced_search_internal_id_jmespath": "basic.internalId[0].searchValue.internalId"
+}
+```
+
 ### Main line advanced search
 
 By default, the advanced search returns one record for each line item. In case we'd not care about the line items, we can change the search behavior to return one line per main line record by configuring `criteria.basic.mainLine` (see [Main Line in NetSuite](https://docs.oracle.com/en/cloud/saas/netsuite/ns-online-help/section_4459563851.html)):