1.Number Range的通用Tcode:SNRO   
2.Number Range的通用读取函数：NUMBER_GET_NEXT
 
3.如有跳号现象，可以禁用对象的Buffer试试
 
4.几个关于Number Range的函数组：
SNR0  Online maint. of number ranges & groups
SNR1  Interface for number ranges and groups
SNR2  Maintenance of number range objects
SNR3  Number range checks, assignment & info.
SNR4  Number ranges utility
 
5.使用自定义的number range objects

1).Create number range object using OYSN (或者SNRO).
2).Then call the following function modules.
FORM get_next_id CHANGING p_discrep.
 DATA: last_id LIKE zrecaudit-discrep,
        quant   LIKE inri-quantity,    "dummy
        code    LIKE inri-returncode. "returncode
 CALL FUNCTION 'NUMBER_RANGE_ENQUEUE'
       EXPORTING
            object           = 'ZRECAUDIT'
       EXCEPTIONS
            foreign_lock     = 1
            object_not_found = 2
            system_failure   = 3
            OTHERS           = 4.
 IF sy-subrc = 0.
    CALL FUNCTION 'NUMBER_GET_NEXT'
         EXPORTING
              nr_range_nr             = '01'
              object                  = 'ZRECAUDIT'
         IMPORTING
              number                  = last_id
              quantity                = quant
              returncode              = code
         EXCEPTIONS
              interval_not_found      = 1
              number_range_not_intern = 2
              object_not_found        = 3
              quantity_is_0           = 4
              quantity_is_not_1       = 5
              interval_overflow       = 6
              buffer_overflow         = 7
              OTHERS                  = 8.
    CALL FUNCTION 'NUMBER_RANGE_DEQUEUE'
         EXPORTING
              object           = 'ZRECAUDIT'
         EXCEPTIONS
              object_not_found = 1
              OTHERS           = 2.
 ENDIF.
ENDFORM.                    " get_next_id

6.常用维护特定Number Range的Tcode：
 
5NZI Number range maintenance: RP_IRCERT 
 Number range maintenance: RP_IRCERT 
ABNV Number range maint: FIAA-BELNR 
 Number range maint: FIAA-BELNR 
AO11 Assign number range 
 分配编号范围 
AS08 Number Ranges:Asset Number 
 号码范围：资产号码 
BDCP Number range maintenance: ALE_CP 
 编号范围维护: ALE_CP 
BG00 Number Range Maintenance: BGMK_NR 
 编码范围维护:BGMK_NR 
BMVN Number Range Maintenance: DI_JOBID 
 编号范围维护： DI_JOBID 
BUCF BP Cust: Number Ranges 
 BP 消费者: 编号范围 
CFNA Maintain PRT number range: FHM_CRFH 
 维护PRT编号范围： FHM_CRFH 
CMTCUS22 Maintain number range for CM product 
 维护 CM 产品的号码范围 
CMTCUS32 Maintain number range for CM folder 
 维护 CM 文件夹的号码范围 
CMTCUS42 Maintain number ranges for Baseline 
 维护起点的号码范围 
FBN1 Accounting Document Number Ranges 
 科目凭证号码范围 
FNS1 Collateral number range 
 附属编号区间 
FOV0 Rental agreement number range 
 租用协议编号范围 
FOW0 Real Estate application number range 
 不动产应用的数据范围 
IN20 Object link number ranges 
 对象连接号码范围 
IP22 Maintain number range: OBJK_NR 
 维护编号范围:OBJK_NR 
KEN2 Maint. number ranges: CO-PA planning 
 维护号吗范围: CO-PA计划 
OGS9 Generate ADP number ranges 
 生成 ADP 编号范围 
OHX3 Maintain number ranges for 3PR 
 维护 3PR 的编号范围 
OIL5 Equipment number ranges 
 设备编号范围 
OION Order number ranges 
 订单编号范围 
OMH6 Number Ranges for Purch. Documents 
 采购凭证的号码范围 
QCCN QM standard number ranges 
 质量管理标准码范围 
QS29 Maintain characteristic number range 
 维护特性编号范围 
QS39 Maintain method number range 
 编号范围维护方式 
VB(1 Rebate number ranges 
 回扣号范围 
VN07 Maintain number range for shipments 
 维护装运的编号范围 
WC64 Catalog code number ranges 
 类别代码编号范围 
WTNR w/tax certificate number range 
 w/tax certificate number range

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补充：

相关表表：NRIV TNRO