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These days, I read documents related with M8 system messages , tolerances , invoice reduction etc.

In this document , i work on implementation and configuration SAP MM Logistic Invoice Verification. My example contains a example which it prevents different postings based on quantity and amount. We will get a problem that i want to post bigger amount, sap will not give permission with error messages finally invoice reduction will solve our this problem.


You can get details :

Related Oss notes&KBA :

1372102 – IMG documentation: Set Tolerance Limits

786810 – MM IV: Tolerance check when you enter invoices

313190 – MR1M: Tolerance groups not taken into account

963185 – MM IV: Tolerance check for entering and releasing invoices

791036 – Tolerance check on account assignment item

1674901 – MIRO shows error message M8083 and does not propose amount value when working with Invoicing Plan

608041 – Tolerance checks with service-related invoice verification

1598731 – No payment block if the lower limit is exceeded during invoice posting – MM-IV

2054815 – MR8M: Not able to cancel a credit memo due to tolerance limit error.

134976 – Tolerances for blanket purchase order

396095 – MRBR: Message M8215 for tolerance key ‘DW’

610340 – No tolerance check for the credit memo

2004992 – MIRO/MIR7: System will not automatically propose “Amount” and “Quantity” after you have done GR 107.

1880413 – Duplicate Invoice Check functionality does not work

158611 – MR1M: Block of invoices for services

753286 – Moving average price becomes very low

90013 – Tolerance limits not converted to local currency

1890543 – Cannot set message “M8 082” as an error at company code level

1853807 – MIR4: Message M8 084 as error message stops posting

1919689 – MIRO: User tolerances are not taken into account

I have a PO , my person posted a material document 100 qty.


In Miro , can you post more quantities and amounts ? Is it related your tolerances ? Not at all.

If posting exceed your tolerances , you can post but it is blocked. If not, you can not prevent. Sometimes , you can not be aware of tolerances when you can post fastly. It is dangerous.

Examples :

1 – Amount is bigger than PO.


2- Quantity and amount are bigger than migo and po values.


What can i do ?

Firstly , check your LIV system messages.

You can update your M8 / 81-82-83-504 messages with ERROR also if you get them.

MM/Logistic Invoice Verification/Invoice Block/Set tolerance limits


* Please check DQ and PP tolerance keys.



However , it is not enough to prevent posting . You have to maintain your LIV system messages.


* I configure M8 messages with ERROR.


* When i post our invoices , sap will not give permission…


** Unfortunately , i have to post some like a weigher result , vendor errors invoices with variances , how can i solve this problem ?

**Sometimes , you can post your invoices with tolerance even though you implement system messages. Invoice reduction can help you.

*Select layout : Invoice reduction , Correction ID : 2 Vendor error – reduce invoice ,Invoice amount Acc to Vendor , however you can use similiar way for quantities. Sap will create one more fi record for differences.


Results :



** Configurations :

You have to configure your T030 table with RKA transaction (OBYC tcode) and invoice document types.


I add RK document type for invoice reduction. (OMR4)


However, if you want to update some datas to implement in your country like a tax rates ..

You have to update records with enhancement implementation program LMRMCF07 .

EXIT_SAPLMRMC_001 -> include ZXM08U19

I hope that it can be benefical for your business life thoughts.

Thanks a lot for spending times …


M.Ozgur Unal

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       Good attempt!!!

       It will be good if you could include the following points..

    1. How / which tolerance key will work if you maintain GR based IV in PO and if its not maintained.

    2. There are other tolerance keys also in OMR6, what are the use of other tolerance keys and when these will be triggered.



      1. Former Member

        Hi mehmet

        Nice document , but which scenerio we get the miro quanity greater than grn or the difference , because when i try to do with bapi_incominginvoice_create alone i have difference , can i solve it by these procedure

        1. Mehmet Ozgur Unal Post author

          Hi Leo;

          You can benefit this scenerio when you get invoice in miro greater grn or amount. For example ; Invoice must be 10 $ , but you get it 11$ . If you implement invoice reduction , you can post credit 1$ to your customer as soon as you can post incoming invoice. However, good receipt is 5 pc x 1$ when invoice quantity 6 pc x 1$ . If you want , you can post 1$ when you post incoming invoice.

          About Bapi, we have to research. This is a special layout, i quess that there are different bapi. I will research.

          Thanks your valuable feedback.


          M.Ozgur Unal

    1. Mehmet Ozgur Unal Post author

      Hi k j ;

      Thanks for your good comment.

      You are right , configuration help us about creating two accounting document during MIRO.

      It is behaviour of Invoice reduction.


      M.Ozgur Unal

    1. Mehmet Ozgur Unal Post author

      Hi Ramesh ,

      When you want to get information about Tolerance & system messages & invoice reduction , you can benefit from this document.


      M.Ozgur Unal

  2. Former Member

    Hi all !! Thanks for this explanation! It´s really good! Please, someone can tell me, how can I check quantity tolerance in MIRO when I do the invoice without goods receipt? My PO has “GR-based IV ” indicator as ” “. So, I have not MIGO document, in MIRO I can do an invoice for a quantity larger than the PO and the system not blocked the document. Tolerance DQ need the goods receipt to work. If I put a larger price ammount, the system check that with PP tolerance and I can´t save the document, but I can´t find how to check the same for quantity. Thanks in advance!! Florencia.

  3. Former Member


    Selam Mehmet,


    Dokümanın Türkçesi mevcut mudur? Eğer varsa benimle paylaşır mısın? Ayrıca süreçsel bazı sorularım olacak cevap vermek ister misin?



  4. Mehmet Ozgur Unal Post author

    Hello Halil ,

    Thanks for your feedback . As you know, SAP revised websites that’s why you get this problem. I updated link. Thanks again.

    If you have any question, you can ask question in MM side. We will try to figure it out.


    M.Ozgur Unal


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