SAP ISH_CHECK_NLEV Function Module for IS-H: Check if preliminary entered services exist for a case

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ISH_CHECK_NLEV is a standard ish check nlev SAP function module available within SAP R/3 or S/4 Hana systems, depending on your version and release level. It is used for IS-H: Check if preliminary entered services exist for a case processing and below is the pattern details for this FM, showing its interface including any import and export parameters, exceptions etc. there is also a full "cut and paste" ABAP pattern code example, along with implementation ABAP coding, documentation and contribution comments specific to this or related objects.

See here to view full function module documentation and code listing for ish check nlev FM, simply by entering the name ISH_CHECK_NLEV into the relevant SAP transaction such as SE37 or SE38.

Function Group: N035
Program Name: SAPLN035
Main Program: SAPLN035
Appliation area: N
Release date: N/A
Mode(Normal, Remote etc): Normal Function Module
Update:

Function ISH_CHECK_NLEV pattern details

In-order to call this FM within your sap programs, simply using the below ABAP pattern details to trigger the function call...or see the full ABAP code listing at the end of this article. You can simply cut and paste this code into your ABAP progrom as it is, including variable declarations.

CALL FUNCTION 'ISH_CHECK_NLEV'"IS-H: Check if preliminary entered services exist for a case
  EXPORTING
   EINRI =  "Institution
   FALNR =  "Case

EXCEPTIONS
   NOTHING_FOUND = 1 

.

Customer Function user exits

Below is a list of CUSTOMER FUNCTION exit user exits that are available within this program and maybe relevant for this FM.
EXIT_SAPLN035_001 IS-H: User exit: Route BI service to preliminary svce entry (NLEI0001)
EXIT_SAPLN035_002 IS-H: User exit: route BI service to preliminary service entry (NLEI0003)

IMPORTING Parameters details for ISH_CHECK_NLEV

EINRI - Institution

Data type: TN01-EINRI
Optional: No
Call by Reference: No ( called with pass by value option)

FALNR - Case

Data type: NFAL-FALNR
Optional: No
Call by Reference: No ( called with pass by value option)

EXCEPTIONS details

NOTHING_FOUND - No preliminary entered services were found

Data type:
Optional: No
Call by Reference: No ( called with pass by value option)

Copy and paste ABAP code example for ISH_CHECK_NLEV Function Module

The ABAP code below is a full code listing to execute function module POPUP_TO_CONFIRM including all data declarations. The code uses the original data declarations rather than the latest in-line data DECLARATION SYNTAX but I have included an ABAP code snippet at the end to show how declarations would look using the newer method of declaring data variables on the fly. This will allow you to compare and fully understand the new inline method. Please note some of the newer syntax such as the @DATA is not available until a later 4.70 service pack (SP8), which i why i have stuck to the origianl for this example.

ABAP code using 7.40 inline data declarations to call FM ISH_CHECK_NLEV

The below ABAP code uses the newer in-line data declarations. This allows you to see the coding differences/benefits of the later inline syntax. Please note some of the newer syntax below, such as the @DATA is not available until 4.70 EHP 8.

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