Netsuite - Custom List related to a object field - rest

Question

I am able to get fields related to an object doing a GET request:
https://[...].suitetalk.api.netsuite.com/services/rest/record/v1/metadata-catalog/customer
And sending as header: Accept: application/schema+json
On this response I get a custom field called: "custentity_companypublicprivate", which in the UI is a dropdown, and the values on this dropdown are a custom list.
Manually I was able to get which is the custom list related: "customlist_compnaypublicprivate"
But I need to get this relationship through code since I need to do this for all fields which are a custom list and in the response I can not find any information which tells me which is the custom list related.
This is the definition of the object:
"custentity_companypublicprivate": {
"type": "object",
"properties": {
"id": {
"title": "Internal identifier",
"type": "string"
},
"refName": {
"title": "Reference Name",
"type": "string"
},
"externalId": {
"title": "External identifier",
"type": "string"
},
"links": {
"title": "Links",
"type": "array",
"readOnly": true,
"items": {
"$ref": "/services/rest/record/v1/metadata-catalog/nsLink"
}
}
}
}
Is there a way to do this?. Thanks in advance for your help.

Answer 1

Another option is to query using SuiteQL.
https://#########.suitetalk.api.netsuite.com/services/rest/query/v1/suiteql?limit=1000&offset=0
Query:
{
"q": "SELECT * FROM CustomField where fieldtype = 'ENTITY'"
}
Returns the list/record InternalId in fieldvaluetyperecord.
Other queries:
{
"q": "SELECT * FROM CustomRecordType"
}
{
"q": "SELECT * FROM CustomList"
}
{
"q": "SELECT * FROM customlist_compnaypublicprivate"
}