Purchase requisition Not editable - Created Via Rest API

Summary:

We are trying to create purchase requisition using rest api but we are unable to edit supplier details even it is is Draft status .

API - /fscmRestApi/resources/11.13.18.05/purchaseRequisitions

Request Payload -

{
"PreparerId": 300000502131002,
"ExternallyManagedFlag": false,
"lines": [
{
"LineNumber": 1,
"LineTypeCode": "Goods",
"CategoryName": "Pipe Fittings",
"ItemDescription": "NIPPLE:NO MODIFIER; TYPE:QUICK CONNECTION",
"Quantity": 1,
"Price": 76.46,
"CurrencyCode": "ABC",
"UOM": "Each",
"RequesterId": 300000502131002,
"DestinationTypeCode": "EXPENSE",
"DestinationOrganizationCode": "GT151",
"DeliverToLocationId": 300000016697861,
"distributions": [
{
"Quantity": 1,
"DistributionNumber": 1,
"projectDFF": [
{}
]
}
],
"SupplierId": 300000029779453,
"SupplierSiteId": 300000030380583,
"RequestedDeliveryDate": "2037-12-08",
"DFF": [
{
"inspectionLevel": "L3"
}
]
}
],
"RequisitioningBUId": 300000100827526,
"Description": "Quotation Proposal for Pipe Fittings, Compressor Parts, and Electrical Equipment for Pipeline Project"
}

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