There are few APIs in INV_ITEM_CATEGORY_PUB package related to item category. This article will follow a category flexfield structure. Please refer the below post for more detail.
1. INV_ITEM_CATEGORY_PUB.Create_Category:
DECLARE
l_category_rec    INV_ITEM_CATEGORY_PUB.CATEGORY_REC_TYPE;
l_return_status   VARCHAR2(80);
l_error_code      NUMBER;
l_msg_count       NUMBER;
l_msg_data        VARCHAR2(80);
l_out_category_id NUMBER;
BEGIN
  l_category_rec.segment1 := 'RED';

  SELECT f.ID_FLEX_NUM
    INTO l_category_rec.structure_id
    FROM FND_ID_FLEX_STRUCTURES f
   WHERE f.ID_FLEX_STRUCTURE_CODE = 'INV_COLORS';

  l_category_rec.description := 'Red';

  INV_ITEM_CATEGORY_PUB.Create_Category
          (
          p_api_version   => 1.0,
          p_init_msg_list => FND_API.G_FALSE,
          p_commit        => FND_API.G_TRUE,
          x_return_status => l_return_status,
          x_errorcode     => l_error_code,
          x_msg_count     => l_msg_count,
          x_msg_data      => l_msg_data,
          p_category_rec  => l_category_rec,
          x_category_id   => l_out_category_id
          );
  IF l_return_status = fnd_api.g_ret_sts_success THEN
    COMMIT;
    DBMS_OUTPUT.put_line ('Creation of Item Category is Successful : '||l_out_category_id);
  ELSE
    DBMS_OUTPUT.put_line ('Creation of Item Category Failed with the error :'||l_error_code);
    ROLLBACK;
  END IF;
END ;

2. INV_ITEM_CATEGORY_PUB. Delete_Category:

DECLARE
l_return_status VARCHAR2(80);
l_error_code    NUMBER;
l_msg_count     NUMBER;
l_msg_data      VARCHAR2(80);
l_category_id   NUMBER;
BEGIN
  SELECT mcb.CATEGORY_ID
    INTO l_category_id
    FROM mtl_categories_b mcb
   WHERE mcb.SEGMENT1='RED'
     AND mcb.STRUCTURE_ID =
        (SELECT mcs_b.STRUCTURE_ID
           FROM mtl_category_sets_b mcs_b
          WHERE mcs_b.CATEGORY_SET_ID =
               (SELECT mcs_tl.CATEGORY_SET_ID
                  FROM mtl_category_sets_tl mcs_tl
                 WHERE CATEGORY_SET_NAME ='INV_COLORS_SET'
                 )
        );

    INV_ITEM_CATEGORY_PUB.Delete_Category
          (
          p_api_version     => 1.0,
          p_init_msg_list   => FND_API.G_FALSE,
          p_commit          => FND_API.G_TRUE,
          x_return_status   => l_return_status,
          x_errorcode       => l_error_code,
          x_msg_count       => l_msg_count,
          x_msg_data        => l_msg_data,
          p_category_id     => l_category_id);

  IF l_return_status = fnd_api.g_ret_sts_success THEN
    COMMIT;
    DBMS_OUTPUT.put_line ('Deletion of Item Category is Successful : '||l_category_id);
  ELSE
    DBMS_OUTPUT.put_line ('Deletion of Item Category Failed with the error :'||l_error_code);
    ROLLBACK;
  END IF;
END ;

3. INV_ITEM_CATEGORY_PUB.Update_Category_Description
Updates the category description.
DECLARE
         l_return_status VARCHAR2(80);
         l_error_code    NUMBER;
         l_msg_count     NUMBER;
         l_msg_data      VARCHAR2(80);
         l_category_id   NUMBER;
         l_description   VARCHAR2(80);
BEGIN
      select mcb.CATEGORY_ID into l_category_id
        from mtl_categories_b mcb
       where mcb.SEGMENT1='BLACK'
         and mcb.STRUCTURE_ID = (select mcs_b.STRUCTURE_ID
             from mtl_category_sets_b mcs_b
             where mcs_b.CATEGORY_SET_ID = (select mcs_tl.CATEGORY_SET_ID
                 from mtl_category_sets_tl mcs_tl
                 where CATEGORY_SET_NAME ='INV_COLORS_SET'));

      l_description := 'new black color';

     INV_ITEM_CATEGORY_PUB.Update_Category_Description (
       p_api_version     => 1.0,
       p_init_msg_list   => FND_API.G_FALSE,
       p_commit          => FND_API.G_TRUE,
       x_return_status   => l_return_status,
       x_errorcode       => l_error_code,
       x_msg_count       => l_msg_count,
       x_msg_data        => l_msg_data,
       p_category_id     => l_category_id,
       p_description     => l_description);

  IF l_return_status = fnd_api.g_ret_sts_success THEN
    COMMIT;
    DBMS_OUTPUT.put_line ('Update of Item Category Description is Successful : '||l_category_id);
  ELSE
    DBMS_OUTPUT.put_line ('Update of Item Category Description Failed with the error :'||l_error_code);
    ROLLBACK;
  END IF;
END ;

Use following API for assigning a category to a category set. A category will be available in the list of valid categoies for a category set only if it is assigned to the category set. This is a required step if for categories enforce list is checked on.

4. INV_ITEM_CATEGORY_PUB.Create_Valid_Category

Create a record in mtl_category_set_valid_cats.

DECLARE
        l_return_status   VARCHAR2(80);
        l_error_code      NUMBER;
        l_msg_count       NUMBER;
        l_msg_data        VARCHAR2(80);
        l_category_set_id NUMBER;
        l_category_id     NUMBER;
BEGIN
       select mcs_tl.CATEGORY_SET_ID into l_category_set_id
         from mtl_category_sets_tl mcs_tl
        where mcs_tl.CATEGORY_SET_NAME ='INV_COLORS_SET';

       select mcb.CATEGORY_ID into l_category_id
         from mtl_categories_b mcb
        where mcb.SEGMENT1='RED'
          and mcb.STRUCTURE_ID = (select mcs_b.STRUCTURE_ID
              from mtl_category_sets_b mcs_b
              where mcs_b.CATEGORY_SET_ID = (select mcs_tl.CATEGORY_SET_ID
                    from mtl_category_sets_tl mcs_tl
                    where CATEGORY_SET_NAME ='INV_COLORS_SET'));

       INV_ITEM_CATEGORY_PUB.Create_Valid_Category (
             p_api_version        => 1.0,
             p_init_msg_list      => FND_API.G_FALSE,
             p_commit             => FND_API.G_TRUE,
             x_return_status      => l_return_status,
             x_errorcode          => l_error_code,
             x_msg_count          => l_msg_count,
             x_msg_data           => l_msg_data,
             p_category_set_id    => l_category_set_id,
             p_category_id        => l_category_id,
             p_parent_category_id => NULL );

  IF l_return_status = fnd_api.g_ret_sts_success THEN
    COMMIT;
    DBMS_OUTPUT.put_line ('Create Valid Category is Successful : '||l_category_id);
  ELSE
    DBMS_OUTPUT.put_line ('Create Valid Category Failed with the error :'||l_error_code);
    ROLLBACK;
  END IF;
END ;

5. INV_ITEM_CATEGORY_PUB.Delete_Valid_Category

Delete the record from mtl_category_set_valid_cats.

DECLARE
           l_return_status    VARCHAR2(80);
           l_error_code       NUMBER;
           l_msg_count        NUMBER;
           l_msg_data         VARCHAR2(80);
           l_category_set_id  NUMBER;
           l_category_id      NUMBER;
BEGIN
         select mcs_tl.CATEGORY_SET_ID into l_category_set_id
           from mtl_category_sets_tl mcs_tl
          where mcs_tl.CATEGORY_SET_NAME ='INV_COLORS_SET';

         select mcb.CATEGORY_ID into l_category_id
           from mtl_categories_b mcb
          where mcb.SEGMENT1='RED'
            and mcb.STRUCTURE_ID = (select mcs_b.STRUCTURE_ID
                from mtl_category_sets_b mcs_b
                where mcs_b.CATEGORY_SET_ID = (select mcs_tl.CATEGORY_SET_ID
                  from mtl_category_sets_tl mcs_tl
                  where CATEGORY_SET_NAME ='INV_COLORS_SET'));

      INV_ITEM_CATEGORY_PUB.Delete_Valid_Category (
            p_api_version      => 1.0,
            p_init_msg_list    => FND_API.G_FALSE,
            p_commit           => FND_API.G_TRUE,
            x_return_status    => l_return_status,
            x_errorcode        => l_error_code,
            x_msg_count        => l_msg_count,
            x_msg_data         => l_msg_data,
            p_category_set_id  => l_category_set_id,
            p_category_id      => l_category_id);

  IF l_return_status = fnd_api.g_ret_sts_success THEN
    COMMIT;
    DBMS_OUTPUT.put_line ('Delete Valid Category is Successful : '||l_category_id);
  ELSE
    DBMS_OUTPUT.put_line ('Delete Valid Category Failed with the error :'||l_error_code);
    ROLLBACK;
  END IF;
END ;
EGO_ITEM_PUB package provides functionality for maintaining items, item revisions, etc. We can use ASSIGN_ITEM_TO_ORG procedure to assign one item to an organization.

The procedure definition is:

PROCEDURE Assign_Item_To_Org(
    p_api_version             IN      NUMBER
   ,p_init_msg_list           IN      VARCHAR2        DEFAULT  G_FALSE
   ,p_commit                  IN      VARCHAR2        DEFAULT  G_FALSE
   ,p_Inventory_Item_Id       IN      NUMBER          DEFAULT  G_MISS_NUM
   ,p_Item_Number             IN      VARCHAR2        DEFAULT  G_MISS_CHAR
   ,p_Organization_Id         IN      NUMBER          DEFAULT  G_MISS_NUM
   ,p_Organization_Code       IN      VARCHAR2        DEFAULT  G_MISS_CHAR
   ,p_Primary_Uom_Code        IN      VARCHAR2        DEFAULT  G_MISS_CHAR
   ,x_return_status           OUT NOCOPY  VARCHAR2
   ,x_msg_count               OUT NOCOPY  NUMBER);
The parameters are:
  • P_API_VERSION – A decimal number indicating major and minor revisions to the API. Pass 1.0 unless otherwise indicated in the API parameter list.
  • P_INIT_MSG_LIST – A one-character flag indicating whether to initialize the FND_MSG_PUB package’s message stack at the beginning of API processing (and thus remove any messages that may exist on the stack from prior processing in the same session). Valid values are FND_API.G_TRUE and FND_API.G_FALSE.
  • P_COMMIT – A one-character flag indicating whether to commit work at the end of API processing. Valid values are FND_API.G_TRUE and FND_API.G_FALSE.
  • P_INVENTORY_ITEM_ID – Inventory Item Id of the Item
  • P_ITEM_NUMBER – Segment1 of the Item
  • P_ORGANIZATION_ID – Organization Id of the Organization to whom Item must be assigned
  • P_ORGANIZATION_CODE – 3 character Organization Code of the Organization to whom Item must be assigned
  • P_PRIMARY_UOM_CODE – Primary Unit of Measure of the item.
  • X_RETURN_STATUS – A one-character code indicating whether any errors occurred during processing (in which case error messages will be present on the FND_MSG_PUB package’s message stack). Valid values are FND_API.G_RET_STS_SUCCESS, FND_API.G_RET_STS_ERROR, and FND_API.G_RET_STS_UNEXP_ERROR.
  • X_MSG_COUNT – An integer indicating the number of messages on the FND_MSG_PUB package’s message stack at the end of API processing.
Tested in R12.1.3
DECLARE
        g_user_id             fnd_user.user_id%TYPE :=NULL;
        l_appl_id             fnd_application.application_id%TYPE;
        l_resp_id             fnd_responsibility_tl.responsibility_id%TYPE;
        l_api_version    NUMBER := 1.0;
        l_init_msg_list       VARCHAR2(2) := fnd_api.g_false;
        l_commit        VARCHAR2(2) := FND_API.G_FALSE;
        x_message_list        error_handler.error_tbl_type;
        x_return_status    VARCHAR2(2);
        x_msg_count        NUMBER := 0;
BEGIN
        SELECT fa.application_id
          INTO l_appl_id
          FROM fnd_application fa
         WHERE fa.application_short_name = 'INV';

        SELECT fr.responsibility_id
          INTO l_resp_id
          FROM fnd_application fa, fnd_responsibility_tl fr
         WHERE fa.application_short_name = 'INV'
           AND fa.application_id = fr.application_id
           AND UPPER (fr.responsibility_name) = 'INVENTORY';

        fnd_global.apps_initialize (g_user_id, l_resp_id, l_appl_id);

        EGO_ITEM_PUB.ASSIGN_ITEM_TO_ORG(
                   P_API_VERSION          => l_api_version
                ,  P_INIT_MSG_LIST        => l_init_msg_list
                ,  P_COMMIT               => l_commit
                ,  P_INVENTORY_ITEM_ID    => 1004
                ,  p_item_number          => TEST1010
                ,  p_organization_id      => 11047
                ,  P_ORGANIZATION_CODE    => 'DXN'
                ,  P_PRIMARY_UOM_CODE     => 'EA'
                ,  X_RETURN_STATUS        => x_return_status
                ,  X_MSG_COUNT            => x_msg_count
            );
        DBMS_OUTPUT.PUT_LINE('Status: '||x_return_status);
        IF (x_return_status <> FND_API.G_RET_STS_SUCCESS) THEN
          DBMS_OUTPUT.PUT_LINE('Error Messages :');
          Error_Handler.GET_MESSAGE_LIST(x_message_list=>x_message_list);
            FOR j IN 1..x_message_list.COUNT LOOP
              DBMS_OUTPUT.PUT_LINE(x_message_list(j).message_text);
            END LOOP;
        END IF;
EXCEPTION
        WHEN OTHERS THEN
          dbms_output.put_line('Exception Occured :');
          DBMS_OUTPUT.PUT_LINE(SQLCODE ||':'||SQLERRM);
END;
Standard Package : INV_CONVERT

Get the Conversion rate from below function easily.

FUNCTION inv_um_convert (p_item_id IN NUMBER,
                          p_from_uom_code IN VARCHAR2,
                          p_to_uom_code IN VARCHAR2) RETURN NUMBER; 

select msi.segment1,
        msi.primary_uom_code,
        ‘Kg’ as second_uom,
        inv_convert.inv_um_convert (msi.inventory_item_id, ‘kg’
                                   msi.primary_uom_code) as coefficient from mtl_system_items_b
where msi.segment1 = ‘OEAG01-ITEM’;

Here I am trying to describe R12 SLA(Sub Ledger Accounting) Procedure.
1) All accounting performed before transfer to the GL. Accounting data generated and stored in “Accounting Events” tables prior to transfer to GL


2) Run “Create Accounting” to populate accounting events (SLA) tables. User can “View Accounting” only after “Create Accounting” is run. Create Accounting process


– Applies accounting rules

 Loads SLA tables, GL tables
 Creates detailed data per accounting rules, stores in SLA “distribution links” table

3) Below are the key tables for SLA in R12


XLA_AE_HEADERS xah

XLA_AE_LINES xal


XLA_TRANSACTION_ENTITIES xte


XLA_DISTRIBUTION_LINKS xdl


GL_IMPORT_REFERENCES gir


Below are the possible joins between these XLA Tables

xah.ae_header_id = xal.ae_header_id



xah.application_id = xal.application_id


xal.application_id = xte.application_id


xte.application_id = xdl.application_id


xah.entity_id = xte.entity_id


xah.ae_header_id = xdl.ae_header_id


xah.event_id = xdl.event_id


xal.gl_sl_link_id = gir.gl_sl_link_id


xal.gl_sl_link_table = gir.gl_sl_link_table


xah.application_id = (Different value based on Module)



xte.entity_code =

‘TRANSACTIONS’ or


‘RECEIPTS’ or


‘ADJUSTMENTS’ or


‘PURCHASE_ORDER’ or


‘AP_INVOICES’ or


‘AP_PAYMENTS’ or


‘MTL_ACCOUNTING_EVENTS’ or


‘WIP_ACCOUNTING_EVENTS’



xte.source_id_int_1 =


‘INVOICE_ID’ or


‘CHECK_ID’ or


‘TRX_NUMBER’


XLA_DISTRIBUTION_LINKS table join based on Source Distribution Types

xdl.source_distribution_type = ‘AP_PMT_DIST’


and xdl.source_distribution_id_num_1 = AP_PAYMENT_HIST_DISTS.payment_hist_dist_id


—————


xdl.source_distribution_type = ‘AP_INV_DIST’


and xdl.source_distribution_id_num_1 = AP_INVOICE_DISTRIBUTIONS_ALL.invoice_distribution_id


—————


xdl.source_distribution_type = ‘AR_DISTRIBUTIONS_ALL’


and xdl.source_distribution_id_num_1 = AR_DISTRIBUTIONS_ALL.line_id


and AR_DISTRIBUTIONS_ALL.source_id = AR_RECEIVABLE_APPLICATIONS_ALL.receivable_application_id


—————


xdl.source_distribution_type = ‘RA_CUST_TRX_LINE_GL_DIST_ALL’


and xdl.source_distribution_id_num_1 = RA_CUST_TRX_LINE_GL_DIST_ALL.cust_trx_line_gl_dist_id


—————


xdl.source_distribution_type = ‘MTL_TRANSACTION_ACCOUNTS’


and xdl.source_distribution_id_num_1 = MTL_TRANSACTION_ACCOUNTS.inv_sub_ledger_id


—————


xdl.source_distribution_type = ‘WIP_TRANSACTION_ACCOUNTS’


and xdl.source_distribution_id_num_1 = WIP_TRANSACTION_ACCOUNTS.wip_sub_ledger_id


—————


xdl.source_distribution_type = ‘RCV_RECEIVING_SUB_LEDGER’


and xdl.source_distribution_id_num_1 = RCV_RECEIVING_SUB_LEDGER.rcv_sub_ledger_id.

Hope this will help you.
–The query inputs the Item ID, organization ID and date.

  SELECT   SUM (target_qty), item_id
    FROM   (  SELECT   moqv.subinventory_code subinv,
                       moqv.inventory_item_id item_id,
                       SUM (transaction_quantity) target_qty
                FROM   mtl_onhand_qty_cost_v moqv
               WHERE   moqv.organization_id = :org_id
                       AND moqv.inventory_item_id = :item_id
            GROUP BY   moqv.subinventory_code,
                       moqv.inventory_item_id,
                       moqv.item_cost
            UNION
              SELECT   mmt.subinventory_code subinv,
                       mmt.inventory_item_id item_id,
                       -SUM (primary_quantity) target_qty
                FROM   mtl_material_transactions mmt, mtl_txn_source_types mtst
               WHERE   mmt.organization_id = :org_id
                       AND transaction_date >= TO_DATE (:hist_date) + 1
                       AND mmt.transaction_source_type_id =
                             mtst.transaction_source_type_id
                       AND mmt.inventory_item_id = :item_id
            GROUP BY   mmt.subinventory_code, mmt.inventory_item_id) oq
GROUP BY   oq.item_id