OP_API_OUTBOUND_DELIVERY_SRV_0002 not able to pack or unpack HU items (Existing HUs)

[AustinKloske]

During our implementation of OP_API_OUTBOUND_DELIVERY_SRV_0002 we have not found a way to create HU Items for existing Handling units via the delivery API. API Documentation only gives an example of simultaneous HU header & HU item creation via one batch request here, however our use case changing HU content after initial creation is not met.

Looking into using the Handling Unit API though it would be ideal to have this functionality included in the delivery API.

A post request on just HU items without HU header returns error "No header found for the HandlingUnitExternalId". 

{
   "error":{
      "code":"LOHUM_DEL_API/002",
      "message":{
         "lang":"en",
         "value":"No header found for the HandlingUnitExternalId 00000000000300000208"
      }
   }  
}

A batch request that includes PUT or PATCH on the HU header+ POST request(s) for new HU item returns error "HTTP method 'PUT' is not supported by this entityset (HU Header)". 

__PRESENT

__PRESENT

__PRESENT

__PRESENT

[AustinKloske]

The Handling unit API documentation states: "Create handling unit items and add them to an already existing handling unit in an IM-managed storage location (packing)." 

But all following documentation and sample code for the Handling Unit API requires WM managed input (ie Warehouse, StockItemUUID). Therefore, it does not seem suitable to use for updating IM Deliveries Handling Units.

Burried in the docs, it also appears that stockItemUUID can be replaced by HandlingUnitRefrenceDocument + HandlingUnitRefDocumentItem

Attempting to unpack an IM Delivery Handling Unit via handling unit API results in error "Deletion of items for existing HUs not supported".

DATA ls_entity_key TYPE /coss2/scm_handling_unit=>tys_handling_unit_item_type.

    "Set entity key
    ls_entity_key = VALUE #(
              handling_unit_external_id  = me->ms_ref_doc-handling_unit_external_id
              "warehouse                  = me->ms_ref_doc-warehouse
              handling_unit_reference_do = me->ms_ref_doc-handling_unit_reference_do
              handling_unit_ref_document = iv_reference_item
    ).

 "Navigate to the resource and create a request for the delete operation
        DATA(lo_resource) = /coss/if_api_hub~mo_client_proxy->create_resource_for_entity_set( 'HANDLING_UNIT_ITEM' )->navigate_with_key( is_entity_key ).
        DATA(lo_request) = lo_resource->create_request_for_delete( ).

        " ETag is needed
        lo_request->set_if_match( me->mv_etag ).

        " Execute the request
        lo_request->execute( ).

Response:

{
   "error":{
      "code":"HU_RAP/062",
      "message":"Deletion of items for existing HUs not supported",
      "@SAP__common.ExceptionCategory":"Provider_Application_Error",
      "innererror":{
         "ErrorDetails":{
            "@SAP__common.Application":{
               "ComponentId":"LO-HU-API",
               "ServiceRepository":"SRVD_A2X",
               "ServiceId":"API_HANDLINGUNIT",
               "ServiceVersion":"0001"
            },
            "@SAP__common.TransactionId":"586E3D3A299F46F9BADD500C7FAD475A",
            "@SAP__common.Timestamp":"20250307083009.850846",
            "@SAP__common.ErrorResolution":{
               "Analysis":"Use ADT feed reader \"SAP Gateway Error Log\" or run transaction /IWFND/ERROR_LOG on SAP Gateway hub system and search for entries with the timestamp above for more details",
               "Note":"See SAP Note 1797736 for error analysis (https://service.sap.com/sap/support/notes/1797736)"
            }
         }
      }
   }

__PRESENT

__PRESENT