SAP AND ABAP TIPS AND FACTS

Friday, April 25, 2008

Important Transaction Codes For SAP IDOCs

SAP R/3 can be interfaced with other systems using various techniques. EDI is one of them. For interfacing SAP R/3 with its partners (Vendors/Customers) the best way is using EDI. Please find below some of the important transaction codes used for IDOCs (intermediate document).

IDOC Monitoring

Transaction Code Description
WE02 IDOC Display
WE05 IDOC List
WE07 IDOC Statistics
WE20 Maintain Partner Profiles Manually
BD82 Generate Partner Profiles Automatically
WE21 Port Definitions
SM59 RFC Destination
BD64 Maintain Customer Model

Message Control

Transaction Code Description
NACE Maintain condition records for various applications
VOK2 Message Control components for Sales and Distribution
VOK3 Message Control components for Purchasing
VOFM Maintain requirements for Message Control
V/86 Field Catalog for condition Tables

Important Menus

Transaction Code Description
WEDI Main Menu for EDI related activities
BALE Main menu for ALE related activities
SWLD Main menu for workflow related activities
SALE ALE Configuration
NACE Message Control Configuration

IDOCs

Transaction Code Description
WE31 Segment Editor
WE30 IDoc Editor to create and extend IDoc type
BD53 Reduce IDoc Types for Master Data
WE60 IDoc documentation (IDoc structure and segment definition)
WE61 IDoc documentation (Control Record, data record, and Status Record)
WE19 Test Tool fro IDOCs
WE12 Convert an Outbound IDOC to an Inbound IDOC
WE16 Process an incoming IDOC
WE17 Process an incoming status file
BD87 Manual processing of IDOCS
Posted by ABAP FRIEND at 4:03 AM

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ABAP TIPS

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ABAP TIPS

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ABAP TIPS
Always specify your conditions in the Where-clause instead of checking them yourself with check statements. The database system can then use an index (if possible) and the network load is considerably less.

ABAP TIPS
For all frequently used Select statements, try to use an index. You always use an index if you specify (a generic part of) the index fields concatenated with logical Ands in the Select statement's Where clause. Note that complex Where clauses are poison for the statement optimizer in any database system.

ABAP TIPS
If there exists at least one row of a database table or view with a certain condition, use the Select Single statement instead of a Select-Endselect-loop. Select Single requires one communication with the database system, whereas Select-Endselect needs two.

ABAP TIPS
It is always faster to use the Into Table version of a Select statement than to use Append statements.

ABAP TIPS
To read data from several logically connected tables use a join instead of nested Select statements. Network load is considerably less.

ABAP TIPS
If you want to find the maximum, minimum, sum and average value or the count of a database column, use a select list with aggregate functions instead of computing the aggregates yourself. Network load is considerably less.

ABAP TIPS
If you process your data only once, use a Select-Endselect-loop instead of collecting data in an internal table with Select Into Table. Internal table handling takes up much more space.

ABAP TIPS
Use a select list or a view instead of Select * , if you are only interested in specific columns of the table. Network load is considerably less.

ABAP TIPS
For all frequently used, read-only tables, try to use SAP buffering. Network load is considerably less.

ABAP TIPS
Whenever possible, use array operations instead of single-row operations to modify your database tables. Frequent communication between the application program and database system produces considerable overhead.

ABAP TIPS
Whenever possible, use column updates instead of single-row updates to update your database tables. Network load is considerably less.

ABAP TIPS
Instead of using nested Select loops or FOR ALL ENTRIES it is often possible to use subqueries. Network load is considerably less.

ABAP TIPS
Use the special operators CO, CA, CS, instead of programming the operations yourself. If ABAP/4 statements are executed per character on long strings, CPU consumption can rise substantially.

ABAP TIPS
Some function modules for string manipulation have become obsolete and should be replaced by ABAP/4 statements or functions: STRING_CONCATENATE... -> CONCATENATE, STRING_SPLIT... -> SPLIT, STRING_LENGTH -> strlen(), STRING_CENTER -> WRITE...TO...CENTERED, STRING_MOVE_RIGHT -> WRITE...TO...RIGHT-JUSTIFIED

ABAP TIPS
Use the CONCATENATE statement instead of programming a string concatenation of your own.

ABAP TIPS
If you want to delete the leading spaces in a string, use the ABAP/4 statement SHIFT...LEFT DELETING LEADING... .Other constructions (with CN and SHIFT...BY SY-FDPOS PLACES, with CONDENSE if possible, with CN and ASSIGN CLA+SY-FDPOS(LEN) ...) are not as fast. In any case, avoid using SHIFT inside a WHILE-loop!

ABAP TIPS
Use the SPLIT statement instead of programming a string split yourself.

ABAP TIPS
Use the strlen( ) function to restrict the DO loop to the relevant part of the field, e.g. when determinating a check-sum.

ABAP TIPS
Use "CLEAR f WITH val" whenever you want to initialize a field with a value different from the field's type-specific initial value.

ABAP TIPS
Try to keep the table ordered and use binary search or used a table of type SORTED TABLE. If TAB has n entries, linear search runs in O( n ) time, whereas binary search takes only O( log2( n ) ).

ABAP TIPS
A dynamic key access is slower than a static one, since the key specification must be evaluated at runtime. However, for large tables the costs are dominated by number of comparison needed to locate the entry.

ABAP TIPS
If you need to access an internal table with different keys repeatedly, keep your own secondary indices.With a secondary index, you can replace a linear search with a binary search plus an index access.

ABAP TIPS
LOOP ... WHERE is faster than LOOP/CHECK because LOOP ... WHERE evaluates the specified condition internally. As with any logical expressions, the performance is better if the operands of a comparison share a common type. The performance can be further enhanced if LOOP ... WHERE is combined with FROM i1 and/or TO i2, if possible.

Always use Pretty Printer and Extended Program Check before releasing the code. Do not leave unused code in the program. Comment the code thoroughly. Align the comments and the Code. Follow the SAP Standards and SAP Best Practices guidelines. It’s a good practice to take a dump of the code on your local drive.

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