====== rm#25486 PO - Wrong error message when undergoing already invoiced quantites via modify ======

https://cust-projects.seeburger.de/redmine/issues/25486

===== Description =====
...

===== TODO =====
  * **-** Analyze
    * The error message is formed in ''POCollabPreprocessor.doPreProcessing():120''


  * **-** Fix
  * **-** Test

===== Analyze =====

The error message is formed in ''POCollabPreprocessor.doPreProcessing():120''

The invoice information seems to be written in the database with the help of BillableObject import ( see ''BillableObjectStatusInboundXMLHandler.processRootElement()''). 

==== Reproduce ====
The invoice information seems to be imported in the system through BillableObject import, but it was too difficult for me to get such a file (no one seems to have such files now). It is possible to reproduce it on the simple way and
Simple

1. Import PO with 3 Positions ( an example: D:\development\testdata\purchaseorder\rm#25486_WrongErrMsgAboutInvoicedQties\po_003.xml )

2. Find out ''CREFHEADERID'' for this PO: 
<code sql>
SELECT * FROM TAIRPOSCHEDULE where CLINEPONUM = 'rm25486_003';
</code>

3. Update invoice quantities for example with the following statement : 
<code sql>
UPDATE TAIRPOLINEITEM 
SET CFULLYINVOICED=1,CINVOICEREMAININGQTY=35,CINVOICETOTALQTY=90,CREQTOTALQTY=90,CPROMTOTALQTY=90 
WHERE CREFHEADERID=<ref_header_id>
</code>


==== Misc ====
  * Fetch PO schedule lines for given PO Number: ''SELECT * FROM TAIRPOSCHEDULE where CLINEPONUM = 'rm25486_003';''
  * Fetch POLineItem for given RefId: ''select * from TAIRPOLINEITEM where CREFHEADERID = 545442''
  * Original entry in tAirPOLineItem: ''INSERT INTO TAIRPOLINEITEM (CLINEITEMID,CREFHEADERID,CPOSNUM,CFULLYINVOICED,CINVOICEREMAININGQTY,CINVOICETOTALQTY,CREQTOTALQTY,CPROMTOTALQTY) VALUES (5755555,545442,'1',0,0,0,90,70);''
  * I've changed it with: ''UPDATE TAIRPOLINEITEM SET CFULLYINVOICED=1,CINVOICEREMAININGQTY=35,CINVOICETOTALQTY=90,CREQTOTALQTY=90,CPROMTOTALQTY=90 WHERE CREFHEADERID=545442''
===== Result =====

''POCollabPreProcessor.doPreProcessing()'' was changed:

<code java>
                        BigDecimal invoicedQty =
                                Toolbox.getBigDecimalOrZero(poLineItemData.getInvoiceTotalQty()).subtract(
                                    Toolbox.getBigDecimalOrZero(poLineItemData.getInvoiceRemainingQty()));
                        resultModel.addMessage(new ClientResultMessageEntry(false, IPOConstants.ERROR_CODE_REQ_QTY_BELOW_INV_QTY, nlsKey,
                                "The quantity of the schedule lines %s1 of the PO item %s2 can't be changed because the resulting item quantity %s3 would be below the already invoiced quantity %s4",
                                slText, preProcData.getPosNumber(), poLineItemData.getReqTotalQty(), invoicedQty));

</code>