信贷额度的组成：假如某客户信用限额1万；开出销售订单时锁定1万；一旦发货1万，销售订单1万限额释放，变成发货锁定限额1万。一旦开票，发货1万限额释放，应收锁定1万限额。清帐成功，应收释放1万。信用限额又回到1万了，如此循环。
未清订单价值：未清订单价值是所有未交货的订单条目的价值；未清订单的价值是基于已确认数量的（已
确认数量乘以信用价格=订单的未清订单价值）；因信用检查已经被锁住的订单不包含已确认的数量；
只要锁还在，未清订单价值就不会增加
未清交货价值：未清交货价值是所有尚未出具发票的交货条目的价值；做了交货装载未做交货确认（客
户收货）。
未清出具发票价值：未清出具发票价值是所有尚未传输到会计的出具发票条目的价值
来自特殊总账事务的预收款：如果它们与信用限额相关（例如，付款），则会从特殊承付款转移到总承
付款；系统基于付款者更新价值；
http://wenku.baidu.com/link?url=oPMuwXni1B0tSevcDr_o1EPnS87vmuYSrg-AKhoho6xDIBCgDaAr4LsWyHcdzrxdZir25PAwjSYxmi8EfnA9FinymWcFuaMbs4iTs-iCQ6K
以上部分为标准信贷管理的配置和说明，下面就说说临时信贷的东西，临时信贷不在SAP标准范围了，这是根据业务需要整出来为一些信用超额的用户实行的特殊管理。
一张临时授信表，对应到客户级别，订单级别，信贷范围级别，且每条授信数据都是有有效期。
逻辑说明：在信用检查的出口中计算客户的临时授信等数据，并参与到标准的信用计算中，最终对于结果给出标准的信贷返回值。
程序出口：LVKMPFZ1
***INCLUDE LVKMPFZ1 .
* Subroutines for user credit check 1 *---------------------------------------------------------------------*
* FORM USER_CREDIT_CHECK1 *
*---------------------------------------------------------------------*
* this routine must be programmed, if user activates credit *
* check user 1 in T691f *
* please regard message numbers V1170, V1171 in Table T100 *
*---------------------------------------------------------------------*
* --> UCC1_UPDATE 'X' means during posting a document *
* ' ' means during processing items *
* --> UCC1_KKBER credit control area *
* --> UCC1_KNKLI credit customer *
* --> UCC1_FLG_ORDER 'X' means document is an order *
* --> UCC1_FLG_DELIVERY 'X' means document is a delivery note *
* <-- UCC1_RC returncode: 0 means OK, 4 means not OK *
*---------------------------------------------------------------------*
FORM USER_CREDIT_CHECK1 USING UCC1_UPDATE
UCC1_KKBER
UCC1_KNKLI
UCC1_FLG_ORDER
UCC1_FLG_DELIVERY
CHANGING
UCC1_RC.
* clear the returncode
CLEAR UCC1_RC.
* credit check: if not positiv, set returncode
* MOVE CON_RC_NOK TO UCC1_RC.
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""$"$\SE:(1) Form USER_CREDIT_CHECK1, End A
*$*$-Start: (1)---------------------------------------------------------------------------------$*$*
ENHANCEMENT ZLVKMPFZ1_CHECK. "active version
DATA: DATE_CREDIT_EXPOSURE TYPE D VALUE '',
SCC_OPEN_ORDER LIKE S066-OEIKW,
SCC_OPEN_DELIVERY LIKE S067-OLIKW,
SCC_OPEN_INVOICE LIKE S067-OFAKW,
SCC_SUM_OPENS LIKE S067-OFAKW,
SCC_RC,
SCC_RC_ALL,
SCC_RC_WARNING,
SCC_RC_ERROR,
SCC_RC_STATUS_SET,
SCC_UPDATE,
SCC_KKBER LIKE rlikp-kkbeR,
SCC_KNKLI LIKE rlikp-knkli,
SCC_FLG_ORDER,
SCC_FLG_DELIVERY,
SCC_CMPSX LIKE rkvbuk-cmpsa.
*变量赋值将UCC的变量值赋值给SCC
SCC_KKBER = UCC1_KKBER.
SCC_KNKLI = UCC1_KNKLI.
SCC_FLG_ORDER = UCC1_FLG_ORDER.
SCC_FLG_DELIVERY = UCC1_FLG_DELIVERY.
SCC_UPDATE = UCC1_UPDATE. "*执行标准的静态检查程序
CLEAR SCC_RC. "实时应回款金额
DATA:LV_DMBTR TYPE DMBTR.
CLEAR:LV_DMBTR.
READ TABLE XVBPA INDEX .
IF SY-SUBRC = .
CLEAR:LV_DMBTR.
CALL FUNCTION 'ZFM_DYN_DUE_PAY'
EXPORTING
IM_VBELC = ''
IM_VBELA = XVBPA-VBELN
IM_ERDAT = SY-DATUM
IMPORTING
EX_DMBTR = LV_DMBTR. IF LV_DMBTR <= .
UCC1_RC = .
ELSE.
UCC1_RC = .
ENDIF.
ENDIF.
"收款单货款金额
DATA:LV_SHKDJE TYPE DMBTR.
CLEAR:LV_SHKDJE.
CALL FUNCTION 'ZSD_SKD_HKJE'
EXPORTING
IM_KUNNR = UCC1_KNKLI
IM_KKBER = UCC1_KKBER
* IM_ZDJLX =
* IM_GJAHR = SY-DATUM+0(4)
IMPORTING
EX_ZHKJE = LV_SHKDJE. "获取临时信用额度
DATA:LV_LSXYED TYPE DMBTR.
CLEAR:LV_LSXYED.
CALL FUNCTION 'ZFM_GET_TEMP_CREDIT'
EXPORTING
* IM_VBELC =
IM_VBELA = XVBPA-VBELN
IM_KUNNR = UCC1_KNKLI
IM_KKBER = UCC1_KKBER
IM_ERDAT = SY-DATUM
* IM_ERDAT2 = SY-DATUM
* IM_CRBLB =
IMPORTING
* EX_ZJLH =
EX_LSXYJE = LV_LSXYED. * Ermitteln Alterung
PERFORM CREDIT_MASTER_GET
USING SCC_KKBER
SCC_KNKLI
T691F-ERLTA
T691F-ERLST
CHANGING SAV_FI_VEKTOR_AKTUELL KNKK.
* get credit exposure SD
IF T691F-STVAW EQ TRUE
OR T691F-STVLW EQ TRUE.
PERFORM CREDIT_EXPOSURE_GET
USING SCC_KKBER
SCC_KNKLI
DATE_CREDIT_EXPOSURE
T014
T691F-STVAW "open order
T691F-STVLW "open delivery
T691F-STVLW "open invoice
CHANGING
SCC_OPEN_ORDER
SCC_OPEN_DELIVERY
SCC_OPEN_INVOICE
SAV_OPEN_ORDER_SECURE
SAV_OPEN_DELIVERY_SECURE
SAV_OPEN_INVOICE_SECURE
DELTA_SPTAG
DELTA_SPWOC
DELTA_SPMON
DELTA_SPBUP.
ENDIF.
* gets the delta of current order, that must computed to credit database
CLEAR: DELTA_OEIKW, DELTA_OLIKW, DELTA_OFAKW.
IF T691F-STVAW EQ TRUE
OR T691F-STVLW EQ TRUE.
IF SCC_FLG_ORDER EQ TRUE.
PERFORM CREDIT_DELTA_ORDER.
* CHANGING DELTA_OEIKW DELTA_OLIKW DELTA_OFAKW.
ENDIF.
*
IF SCC_FLG_ORDER EQ CHARY.
PERFORM CREDIT_DELTA_SM_ORDER.
ENDIF.
*
IF SCC_FLG_DELIVERY EQ TRUE.
PERFORM CREDIT_DELTA_DELIVERY.
* CHANGING DELTA_OEIKW DELTA_OLIKW DELTA_OFAKW.
ENDIF.
ENDIF.
* offene werte bestimmen SCC_SUM_OPENS = SCC_SUM_OPENS - LV_SHKDJE - LV_LSXYED. IF T691F-STVAW EQ TRUE.
ADD DELTA_OEIKW TO SCC_OPEN_ORDER.
SCC_SUM_OPENS = SCC_SUM_OPENS + SCC_OPEN_ORDER.
ENDIF.
IF T691F-STVLW EQ TRUE.
ADD DELTA_OLIKW TO SCC_OPEN_DELIVERY.
ADD DELTA_OFAKW TO SCC_OPEN_INVOICE.
SCC_SUM_OPENS = SCC_SUM_OPENS + SCC_OPEN_DELIVERY
+ SCC_OPEN_INVOICE.
ENDIF.
* Kreditlimit anpassen
PERFORM KNKK-KLIMK_CHANGE USING T691F CHANGING SAV_KNKK_KLIMK.
* open values > creditlimit
IF SCC_SUM_OPENS GT SAV_KNKK_KLIMK.
PERFORM MESSAGE_EXCEEDED_VALUE USING SCC_FLG_ORDER SCC_SUM_OPENS.
MOVE CON_RC_NOK TO SCC_RC.
ELSE.
CLEAR:RC_CHECK,RC_WARNING.
* IF SY-TCODE = 'VA02'.
* CALL FUNCTION 'SD_ORDER_CREDIT_RELEASE'
* EXPORTING
* VBELN = XVBPA-VBELN
** IF_SYNCHRON = 'X'
* .
*
* ENDIF.
ENDIF.
* set returncodes and status
* PERFORM INDICATORS_SET USING SCC_UPDATE
* SCC_RC
* T691F-STSET
* T691F-STREA
* CHANGING SCC_RC_ALL
* SCC_RC_WARNING
* SCC_RC_ERROR
* SCC_RC_STATUS_SET
* SCC_CMPSX.
* set returncodes and status for ageing FI data
PERFORM AGEING_FI_DATA USING SAV_FI_VEKTOR_AKTUELL
SCC_UPDATE
T691F-STSET
T691F-STREA
CHANGING RC_CHECK_M
SCC_RC_ALL
SCC_RC_WARNING
SCC_RC_STATUS_SET
RKVBUK-CMPSM
FI_VEKT_REA.
ENDENHANCEMENT.
*$*$-End: (1)---------------------------------------------------------------------------------$*$*
ENDFORM.
订单解冻函数：SD_ORDER_CREDIT_RELEASE 效果等同于VKM1
状态更新函数：I_CHANGE_STATUS 强制修改状态，用前需检查状态未变更，否则状态会DUMP
信贷金额限度：CREDITLIMIT_CHANGE upd_knkk ‘I’ 'U'...