The message F5727 (Maximum number of items in FI reached) when trying to post an invoice on a purchase order via MIRO is because there is a limit of (999) line items which can be posted per FI document.
This is because the line item number (BSEG-BUZEI) field length is defined as (3) numeric positions, i.e., (999) line items.
The most commonly used workarounds are as follows:
1) Implement FI summarization (per note 36353 ).
2) Cancel the original billing document and split it into smaller documents using different payment terms but actually with the same terms, in case of invoice verification.
This will avoid the (999) line item limit for FI postings. Please also have a look at the note 117708 Not to be able to create more than 999 FI line items is a basic restriction. The line items field on the BSEG table (BSEG-BUZEI) is a 3 position numeric field. To change this to a field greater than 3 positions will not be possible.This restriction is being addressed but because BSEG is a cluster table and involves many programs this will take some time to change.(note 36353).
This is the answer from the point of view of the support, the mentioned note provides a workaround.If you would like, according to your own needs, you may change the field length, however please consider that this is deemed a modification to the standard and this is not
supported by the primary support.
Please have a look again at note 36353. This note mentions fields which often prevent summarization for reference type 'MKPF' and which can be put into table TTYPV for reference type 'MKPF':
table name field name
BSEG BPMNG
BSEG BPRME
BSEG ERFME
BSEG ERFMG
BSEG MATNR
BSEG MEINS
BSEG MENGE
BSEG PAOBJNR
BSEG POSN2
BSEG WERKS
BSEG BWTAR
You should add these fields in transaction OBCY. But please take into account that Using FI-summarization will to a certain extent cause a loss of 'traceability' in your system. You will no longer have a one-to-one relationship between the postings in MM and FI.
A single posting in FI may reflect a number of line items in a MM document, so a drill down will not always be as effective as before.
Several drawback to using summarization are listed in note 36353 (I cannot judge if these will cause you problems) it depends on your configuration in OBCY and your business procedures.
Please review the related notes, I have attached for your reference, the only other option you have if you do not use these notes is to split the original invoice in several parts so that the FI document has less than 999 lines.
