Acumatica REST API - Create activity linked to customer - json

Question

I am trying to programmatically add an activity to a customer entity. I can create both a customer and a note using the API with a PUT, but I cannot figure out how to relate the activity to the customer. I viewed the JSON definition using Postman, but didn't see anything that made sense for relating it to another entity. I tried adding RelatedEntityDescription, but that unsurprisingly did not work.
Here is my JSON body for the PUT (it works but creates an un-linked activity)
{
"Body": {
"value": "message text"
},
"Date": {
"value": "2020-04-22T15:28:00.99-05:00"
},
"Summary": {
"value": "Test message"
}
}
What do I need to add to link it to my customer?

Answer 1

Good day Sreimer
The Table you should be saving to is Note.
It links on BAccount.NoteID and Note.NoteID.
An easy way to test this is to create and save a note on a customers and look for it in Note:
select *
from Note
where NoteText like '%test%';

Answer 2

You just need to specify the RelatedEntityType and RelatedEntityNoteID in your request
{
"Body": {},
"Date": {
"value": "2021-01-06T14:42:03.837-08:00"
},
"RelatedEntityNoteID": {
"value": "01a0c017-df7f-ea11-8175-b9d61cb73193"
},
"RelatedEntityType": {
"value": "PX.Objects.AR.Customer"
},
"Summary": {
"value": "Test Activity 4"
},
"Type" : {
"value" : "M"
}
}