Regarding marking of status for generate draft invoice for single projects

Question

Hi,
1)
I have read through the portion - "Automatic Invoice Approve/Release Extension" in the document - "Oracle® Projects APIs, Client Extensions, and Open Interfaces".
Noticed the package - "pa_client_extn_inv_actions" and procedures - "approve_invoice, release_invoice".
I understand that these procedure play role in the actually approving & release of the invoice but will this also play role in changing the status or some other code need to be written for changing the status.
My requirement of customizing a workflow for approval also need to mark status as unapproved when not approved. Not sure if same procedure will help.I am completely new in Project accounting so not sure if I have put forward very basic questions.
2) Second question is in regards to the way this procedure should be modified :
This is the code for approve_invoice:
/*----------------------------------------------------------------------+
| Approve Customer Invoice Template |
+----------------------------------------------------------------------*/
Procedure Approve_Invoice ( P_Project_ID in number,
P_Draft_Invoice_Num in number,
P_Invoice_Class in varchar2,
P_Project_Amount in number,
P_Project_Currency_Code in varchar2,
P_Inv_Currency_Code in varchar2,
P_Invoice_Amount in number,
X_Approve_Flag out NOCOPY varchar2, --File.Sql.39 bug 4440895
X_Status out NOCOPY number ) is --File.Sql.39 bug 4440895
BEGIN
-- Reset the output parameters.
X_Approve_Flag := NULL;
X_status := 0;
-- Add your Approve Invoice Logic here.
-- If you want to Approve the Invoice set X_Approve_Flag to 'Y'.
-- If it's null or set to 'N', Approval of Invoice will not be Done.
-- Do not add 'commit' or 'rollback' in your code, since Oracle
-- Projects controls the transaction for you.
EXCEPTION
when others then
-- Add your exception handler here.
-- To raise an application error, assign a positive number to X_Status.
-- To raise an ORACLE error, assign SQLCODE to X_Status.
RAISE;
END Approve_Invoice;
I have shown below what I understand on the modifications to be done on the same:
Procedure Approve_Invoice ( P_Project_ID in number,
P_Draft_Invoice_Num in number,
P_Invoice_Class in varchar2,
P_Project_Amount in number,
P_Project_Currency_Code in varchar2,
P_Inv_Currency_Code in varchar2,
P_Invoice_Amount in number,
X_Approve_Flag out NOCOPY varchar2,
X_Status out NOCOPY number ) is
BEGIN
-- Reset the output parameters.
X_Approve_Flag := NULL;
X_status := 0;
X_Approve_Flag := 'Y';
-- If you want to Approve the Invoice set X_Approve_Flag to 'Y'.
-- If it's null or set to 'N', Approval of Invoice will not be Done.
EXCEPTION
when others then
X_Status = 1;
-- To raise an application error, assign a positive number to X_Status.
-- To raise an ORACLE error, assign SQLCODE to X_Status.
RAISE;
END Approve_Invoice;
**Will this modification "X_Approve_Flag := 'Y';" result in the invoices to be approved if I put this after the APPROVE path and if I put "X_Approve_Flag := 'N';", does that mean that the invoice would be rejected/unapproved so that I can put it after the REJECT path ?
3)
Custom workflow launch procedure to be fired from billing extension screen. Presently what is done is in the project template screen, in the billing assignment, the billing extension is referred.
That means for each and every project, billing extension name will be attached.
Present flow is once the generate draft invoice runs, triggers the billing extension, which in turn invoke the custom workflow launch procedure. But my question is how my workflow launch procedure is going to identify the particular transaction which triggered the workflow procedure, because based upon some project number/id/invoice number, I will have a select fetch the data into variable and then setting those into workflow attributes between create process and start process.
So question is how my procedure will identify the transaction which invoked the procedure to get the particular project number/invoice number may be.
I am not getting much from my research so thought of sharing with you if someone can assist me on the same.
Regards,
Ad

Answer 1

Hi Krishna,
Yes. I am invoking my workflow from billing extension only. I have entered the procedure name in the billing extension. Now when the draft invoice runs , setup is such that billing extension gets invoked as a result of "draft invoice for a single project".
Till now its fine because my workflow is actually getting launched from here.
Now custom requirement is that the approve and release in invoice review screen will be disabled and the approval process will have to be custom.
Till this also its fine.
A scenario is when the custom notification reaches approver. He/she would either approved or reject. If he approves, then invoice should get approved and then released.
For this we tried and it seems no API is available as mentioned by Oracle. So whats the way to update invoice statuses ?. Presently we are going with a not recommended way - insert into tables . But I feel something should be there on updating status as per custom logic.
You can let me know what u did for changing statuses
When we do release from invoice review screen, an RA invoice number gets generated. I also need to update the table with the RA invoice number while insertion in table. Now there is no d/b sequence for this number. I have tried to open the logic of Release button and could get on table name PA_IMPLEMENTATIONS which always have 1 row for per OU. and there is a field next ra invoice number which shows the RA invoice number to be used. This value will keep on incremented as long as RA number gets generated.
I am stuck at this place , on how to get the RA invoice number with some proper recommended method.
In short I need a way to update inoice statuses like approved, released other than direct insert in table
and how to get RA invoice number to be utilised while the release logic
Regards,
Ad