Purchase Order Modification: External Document Number already assigned

We're running Extended Classic Scenario in a SRM 4.0 implementation.
The problem is the following: When the user modifies a purchase order (this purchase order is already replicated to the backend), sometimes (not always), the next error occurs:
"Purchase Order XXXXXXXXXX: PO header data still faulty "
"Purchase Order XXXXXXXXXX: External document number XXXXXXXXX already    assigned"
The system does not provide additional info (RZ20 give us the same message, no ST22 dumps...
We think it could be some kind of error in the standard BAPI BAPI_PO_CHANGE.
We've revised the SAP OSS but didn´t find anything....
Some idea?
Regards and Thanks in advance!!!

<u>Any other rrors / dumps noticved in system using RZ20 and ST22 transactions ?</u>
<b>Have you seen this helpful pointers and link ?</b>
<u>The related SAP OSS notes are as under :</u>
<b>"Purchase Order item 00010 still contains faulty account assignment items"</b>
<b>Note 1000184 - Account assignment error when document transfer to back end</b>
Note 966323 - Service Item: Not able to create PO in ERP backend
"Purchase Order item 00010 still contains faulty account assignment items"
Re: How to create a PO in R/3 from a local Bid Invitation in classic scenario ?
Re: From local Bid invitation PO is not generated in backend
<b>Do let me know.</b>
- Atul

Similar Messages

  • External document number already assign

    I am running Extended Classic Scenario.
    In my Application Monitors under <b>Purchase Order :  Backend application errors</b>
    I once in a while get an error like this:
    "<b>PurchOrder 3000002452: PO header data still faulty</b> "
    "<b>Purchase order 3000002452: External document number 3000002452 already assign ed</b>"   
    As far as I can see the PO is fully copied into R/3 and if there is made a chage to the PO, it is also replicated in R/3
    Does anyone have an idea why I am experiencing this error?

    Which SRM and R/3 versions are you using ?
    Please give complete Error message details using RZ20 Transaction ?
    Any other dumps noticed in R/3 or SRM System, using ST22 Transaction ? If yes, give details.
    <u>Meanwhile, please look at the following SAP OSS Notes -></u>
    Note 990946 - BBPSC01: Accounting error during PO creation
    Note 815849 - FAQ: Account assignment system response
    Do let me know.
    - Atul

  • Last Purchase Order and FI-Document Number of an Vendor

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    Hi Venu,
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    Atleast, this is the way we did in our scenario.
    Have 0FI_GL_4 enhanced with data from EKKO, EKPO tables, with required feilds. This enhancement may not be quite detailed.
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    Do this:
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    Hi Experts,
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    Hi Rakesh,
    Thanks for your suggestion...........
    If incase there is a PO with 100 ton of Steel and after subsequent supply of 40 tons it has been found that some of the above mentioned parameters are changed, thre how can we do the changes/amendents so that we need not issue a seperate PO. also if the supply is over the said demand qty of 100 tons (say 125 tons) how do we account the same in tghe existing PO?
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    Hi All,
    Please suggest if you came across such situation. <removed by moderator>
    Rahul Sisodia
    Edited by: Thomas Zloch on Sep 19, 2011 10:18 PM

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    hi what r the transaction codes for purchase orders and sales documents.

    Hi Mohan,
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    ME2N  Purchase Orders by PO Number
    ME2W  Purchase Orders for Supplying Plant
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    We are using this functionaly:
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    chenna kesava reddy

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    Could you clarify your reguest?

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