Hello.
Here is my previous question, context: https://community.oracle.com/customerconnect/discussion/917020/oracle-financial-cloud-how-to-create-global-descriptive-flexfield-for-payables-invoices?utm_source=community-search&utm_medium=organic-search&utm_term=
This is my global segments of invoice Dff. "Manage Descriptive Flexfields"→ "AP_INVOICES" flex field code.

For example, I fill "testGlobal" (see picture above) field in the invoice with value "GLOB TEST VALUE".
Then I read Dff and Gdf of this invoice via REST API:
Dff: $"/fscmRestApi/resources/11.13.18.05/invoices/300000014922990/child/invoiceDff"
Gdf: $"/fscmRestApi/resources/11.13.18.05/invoices/300000014922990/child/invoiceGdf"
For Dff I have:
"items" : [
{
"InvoiceId" : 300000014922990,
"testglobal" : "**GLOB TEST VALUE**",
"igGlobTest1" : null,
"igGlobTest3" : null,
"igGlobTest4" : null,
"igGlobTest5" : null,
"invoiceqrurl" : null,
"universaluniqueidentifier" : null,
"__FLEX_Context" : null,
"__FLEX_Context_DisplayValue" : null,
For Gdf I have:
"items" : [
{
"InvoiceId" : 300000014922990,
"__FLEX_Context" : null,
"__FLEX_Context_DisplayValue" : null,
So, I see global segment value inside Dff. It's logically, as I understand, because in the UI of Dff I see the same, see screenshot above. I get Dff and Gdf with help of "/fscmRestApi/resources/11.13.18.05/invoices/300000014922990/child/invoiceDff" request.
Question is: What is the purpose of "Gdf" section of the invoice? It's empty in my case.
Could you clarify it, please.