Help with Bulk Write API - Accounts Module with custom layout

Help with Bulk Write API - Accounts Module with custom layout

We are trying to update our Accounts module via Bulk Write API for the first time, to test it we prepare a CSV file with only 2 records

Layout,id,IM_Balance,Ingram_Micro_Line_of_Credit
Zoho 3.0,1118734000025841001,1.000000,1.000000
Zoho 3.0,1118734000025841001,1.000000,2.000000

We have a custom Layout called Zoho 3.0, on the CSV we have the api names of custom fields of that custom layout.

We upload the file:



Then we try to create the job  but we are getting INTERNAL_SERVER_ERROR: 



Full Body of the request:
  2. {
  3.     "operation": "update",
  4.     "ignore_empty": true,
  5.     "callback": {
  6.         "url": "https://a2ktest.free.beeceptor.com",
  7.         "method": "post"
  8.     },
  9.     "resource": [
  10.         {
  11.             "type": "data",
  12.             "module": "Accounts",
  13.             "file_id": "3743390000002547001",
  14.             "field_mappings": [
  15.                 {
  16.                     "api_name": "Layout",
  17.                     "index": 0
  18.                 },
  19.                 {
  20.                     "api_name": "id",
  21.                     "index": 1
  22.                 },
  23.                 {
  24.                     "api_name": "IM_Balance",
  25.                     "index": 2
  26.                 },
  27.                 {
  28.                     "api_name": "Ingram_Micro_Line_of_Credit",
  29.                     "index": 3
  30.                 }
  31.             ],
  32.             "find_by": "id"
  33.         }
  34.     ]
  35. }
Are we missing something? how do you describe the layout on the CVS file?

Thanks for the help!