Inspection lot number ranges skipping

Question

My inspection lot number ranges are skipping, those are std number ranges like 01 origin, 04 origin etc, what could be the reason for that.
Inspn lots are getting generated and I took UD also. But certain numbers in the range got skipped.
Eg:- Incoming inspn lot 010000000041 then it comes 010000000045
Lot numbers 01/42, 01/43, 01/44 does not exist in sytem.
Please suggest a way out
Thanks
Vineeth
Edited by: vineeth varghese on Jul 18, 2008 11:31 AM

Answer 1

Craig,
But expert suggestion says, not to switch off buffer thru SNRO as it may affect fuctionality as you said early in this discussion.
But I believe, this is to be relooked by SAP as number range skipping is not good (My case its skipping 5-7 numbers at a time). But I am not convinced with the reply from SAP also.
Anyway thanks to you craig for your advice.
SAP Note on this matter for reference of all. Thanks
================================
Note: 62077
Summary
Symptom
Gaps (jumps) occur when allocating internal numbers.
The status of the number range interval does not match the number that was last assigned.
The number assignment does not reflect the insert sequence.
IMPORTANT: Read Notes 504875 and 678501.
Other terms
Document number, number range, number range object, buffering, current number level, trip number assignment, number interval, CO document, CO actual posting, inspection lot, material document, physical inventory document, production order number, planned order number, process order number, maintenance order number
FB01, VF01, KO88, KE21, KE11, FD01, FK01, XK01, XDN1, MB01, MB0A, MB11, MB1A, MB1B, MB1C, MB31, KANK, KB11, KB13, KB14, KB41, KB43, KB44, KB21, KB23, KB24, KB31, KB33, KB34, KB51, KB53, KB54, PR01, PR02, PR03, PR04, PR05, XD01, VD01, MK01, SNUM, SM56, SNRO, VL01, VL02, CO01, CO40, CO41, VA01, MR1M, MIRO
Reason and Prerequisites
A large number of number range objects are buffered. When the system buffers a number range object, it does not update numbers individually in the database but reserves a preset group of numbers (depending on the number range object) in the database the first time a number is requested, and makes these numbers available to the application server in question. The following numbers can then be taken directly from the application server buffer. New numbers are not used in the database until the application server buffer has been used up.
The effects described under "Symptom" are a direct consequence of this:
If an application server is shut down, the numbers that are left in the buffer (that is, that are not yet assigned) are lost. As a result, there are gaps in the number assignment.
The status of the number range interval reflects the next free number that has not yet been transferred to an application server for intermediate buffering. The current number level therefore does not display the number of the "next" object.
The current number level (for each server) can be displayed using Transaction SM56. Call transaction SM56 and choose the menu 'Goto' -> 'Entries'. In the dialog box, enter the client, the affected number range object (for example, RK_BELEG) and possibly the required subobject (corresponds to the controlling area for the object RK_BELEG).
If you use several application servers, the numerical sequence will not reflect the (chronological) insert sequence because the numbers are buffered separately on the individual hosts.
Buffering the number range objects has a positive effect on performance, because the system no longer has to access the database (number range table NRIV) for each posting. Furthermore, a serialization of this table (database locking) is prevented to a large extent so that posting procedures can be carried out in parallel.
Solution
Since number range buffering does not cause any expressly assured qualities to be lost, no correction is required.
If you still require continuous allocation, you can deactivate the number range buffering specifically for individual objects.
Proceed as follows:
- Start Transaction SNRO and enter the affected object.
- Choose 'Change'.
- Deactivate buffering: Choose 'Edit' -> 'Set Up Buffering' -> 'No Buffering'.
- If you want to change the buffer size only, enter the corresponding value in the field 'No. of numbers in buffer'.
- Save the changes.
Please note that this change is a modification. The modification is overwritten as soon as the affected number range object is redelivered - in other words, you must check the change manually each time you import a release.
In particular, read Note 678501, bearing in mind that changing the buffering type - if not explicitly recommended by SAP - constitutes a modification. For other possible solutions, refer to the following notes:
179224, 599157 and 840901.
For the the following number range objects, gaps may cause users to have doubts since they are 'expecting' a sequential numbering:
Area CO:
- RK_BELEG   (CO Document)
CAUTION: Note that the problems described in Notes 20965 and 29030 may occur if you deactivate buffering.
- COPA_IST (Document number in actual posting)
- COPA_PLAN  (Document number in planned posting)
- COPA_OBJ   (Profitability segment number)
Area FI:
- DEBITOR    (Customer master data)
- KREDITOR   (Vendor master data)
Area HR:
- RP_REINR  (Trip numbers)
Area PM, PP, PS
- AUFTRAG    (Order number, production, process, maintenance order, network number)
- QMEL_NR    (Number range - message)
Area MM:
- MATBELEG   (Material documents)
- MATERIALNR (Material master)
Area QM:
- QLOSE      (Inspection lots in QM)
- QMEL_NR    (Number range - message)
- QMERK      (Confirmation number)
- QMERKMALE  (Master inspection characteristics in QSS)
- QMERKRUECK (Confirmation number of an inspection characteristic in QM results processing)
- QMETHODEN  (Inspection methods in QM)
- ROUTING_Q  (Number ranges for inspection plans)
- QCONTROLCH (Quality control chart)
Area Workflow:
- EDIDOC     (IDocs)
Number range buffering can be activated or deactivated at any time.
Number range objects that have to be continuous due to legal specifications (for example, RF_BELEG, RV_BELEG), or due to a corresponding application logic must not be buffered using the buffering type 'Main memory buffering'. See also Notes 37844 (for RF_BELEG) and 23835 (for RV_BELEG).
Header Data
Release Status: Released for Customer
Released on: 10.07.2007  12:57:00
Priority: Recommendations/additional info
Category: Consulting
Primary Component: BC-SRV-NUM Number Range Management
Secondary Components: CA-GTF General Application Functions
BC-SRV-ASF-UOM Unit Management
CO Controlling
CO-OM-CCA Cost Center Accounting
CO-OM-CCA-A Master Data
CO-PA Profitability Analysis
FI Financial Accounting
FI-AP Accounts Payable
FI-AR Accounts Receivable
FI-GL General Ledger Accounting
FI-TV Business Trip Management
LO-MD-MM Material Master
MM Materials Management
MM-IM Inventory Management
MM-IM-PI Physical Inventory
PM Plant Maintenance
PP Production Planning and Control
QM Quality Management
QM-PT Quality Planning
QM-QN Quality Notifications
Edited by: viny on Jul 23, 2008 9:18 AM