Dynamics Community Forum Thread Details

Failure on creating purchase invoice header from custom extension page

Consider the below extension page:

page 60000 AAA_PurchaseInvoiceAPI{    PageType = API;    Caption = 'AAA PurchaseInvoiceAPI', Locked = true;    APIPublisher = 'aaa';    APIGroup = 'group1';    APIVersion = 'v5.1';    EntityName = 'purchaseinvoice';    EntitySetName = 'purchaseinvoices';    SourceTable = /Purchase Header/;    SourceTableView = where(/Document Type/ = filter(Invoice));    DelayedInsert = true;    ODataKeyFields = SystemId;    layout    {        area(Content)        {            repeater(GroupName)            {                field(DocumentType; Rec./Document Type/)                {                    Caption = 'DocumentType', Locked = true;                }                field(DocumentNo; Rec./No./)                {                    Caption = 'DocumentNo', Locked = true;                }                field(DueDate; Rec./Due Date/)                {                    Caption = 'DueDate', Locked = true;                }                field(BuyFromVendorNo; Rec./Buy-from Vendor No./)                {                    Caption = 'BuyFromVendorNo', Locked = true;                }### SOME MORE FIELDS...                field(SystemId; Rec.SystemId)                {                    Caption = 'SystemId', Locked = true;                }            }        }    }

In some environments (with only this extension deployed) We cannot create purchase header via API
URL=
https:/api.businesscentral.dynamics.com/v2.0/tenantID/env_ID/api/stampli/group1/v5.1/companies(company_ID)/purchaseinvoices
Body = {
   /BuyFromVendorNo/: /MONNSU/,
   /DueDate/: /2023-06-06/,
   /DocumentDate/: /2023-06-05/,
   /VendorInvoiceNo/: /160392/,

### SOME MORE FIELDS
}

Response =

{/error/:{/code/:/Internal_RecordNotFound/,/message/:/The Purchase Header does not exist. Identification fields and values: Document Type='Invoice',No.='' CorrelationId: d18af886-d80f-4970-9b11-e2e4f53623ab./}}

Tried several approaches:
1. verified the no series setup
2. created a purchase credit memo header successfully

3. verified no extensions other than mine works in the environment

Not sure what else can I try. please assist

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