Using error stack and error dt ps in sap bi 7.0

Using Error Stack and Error DTPs
in SAP BI 7.0

Applies to:
SAP BI 7.0 developers and support Users. For more information, visit the EDW homepage.

Summary
In this document we aim to discuss the procedure to collect the erroneous records in the error stack and load
them to the target using an error DTP in SAP BI 7.0. This document also highlights the various options in
handling errors using a DTP.

Author: Dinesh V
Company: IGate Services Limited
Created on: 24 Feb 2011

Author Bio
Dinesh is working as a SAP BW/BI Consultant in IGate Services Pvt Ltd, India. His expertise
include SAP BW 3.5, SAP BI 7.0 and ABAP developments

SAP COMMUNITY NETWORK SDN - sdn.sap.com | BPX - bpx.sap.com | BOC - boc.sap.com | UAC - uac.sap.com
© 2011 SAP AG 1

Using Error Stack and Error DTPs in SAP BI 7.0

Table of Contents
Introduction ......................................................................................................................................................... 3
Steps in Handling Erroneous Records ............................................................................................................... 4
Step 1: Analyze Erroneous Records ............................................................................................................... 4
Step 2: Enable Error Stack ............................................................................................................................. 5
Step 3: Define Semantic Groups .................................................................................................................... 6
Step 4: Settings for Error Stack ...................................................................................................................... 7
Step 5: Execute the DTP load ......................................................................................................................... 8
Step 6: Validate Erroneous records in Error Stack ......................................................................................... 8
Step 7: Create and execute the Error DTP ..................................................................................................... 9
Related Content ................................................................................................................................................ 10
Disclaimer and Liability Notice .......................................................................................................................... 11

© 2011 SAP AG 2


Introduction
Error Stack is a request-based table (PSA table) into which erroneous data records from a data transfer
process (DTP) are written. The error stack is based on the data source (PSA, DSO or Info Cube), that is,
records from the source are written to the error stack.
For a data transfer process (DTP), you can specify how you want the system to respond when data records
contain errors. If you activate error handling, the records with errors are written to the error stack. You can
use a special data transfer process, the error DTP, to update the records to the target.

Figure 1: - Process Flow Chart

© 2011 SAP AG 3


Steps in Handling Erroneous Records
Step 1: Analyze Erroneous Records
Go to the Update tab of the DTP of the target where there are erroneous records. Error Stack is available
after each processing step of the DTP request. This allows you to find out which processing step the error
occurred in.

Examples of Incorrect Data Records

 Field contains invalid characters or lowercase characters
 Error during conversion
 A routine returns a return code <> 0
 Characteristic value is not found for master data
 Duplicate data records with relation to keys
 If no SID exists for the characteristic value
 If no SID exists for the value of the navigation attribute

Figure 2:- Data Transfer Process

© 2011 SAP AG 4


Step 2: Enable Error Stack
Change the DTP to Edit Mode and on the Update tab of DTP; select the Error Handling mechanism based
on how you want system to respond to data records with errors.

The various error handling mechanisms are explained as below:-
 No update, no reporting (default) - If errors occur, the system terminates the update of the entire data
package. The request is not released for reporting. The system continues checking the records
however.
 Update valid records, no reporting (request red) - This option allows you to update valid data. This
data is only released for reporting after the administrator checks the incorrect records that have not
been updated and manually releases the request by setting the overall status on the Status tab page
in the monitor (QM action).
 Update valid records, reporting possible - Valid records can be reported immediately. Automatic
follow-up actions, such as adjusting the aggregates, are also carried out.

Note: Specify the maximum number of incorrect data records allowed before the system terminates the transfer
process. If you leave this blank, handling for incorrect data records is not activated, and the update is terminated
as soon as the first error occurs.

Figure 3:- Error Handling of DTP

© 2011 SAP AG 5


Step 3: Define Semantic Groups
Go to Extraction tab of the DTP and click on Semantic Groups to define the Semantic Groups to define the
key fields of error stack.
This setting is only relevant if you are transferring data to Data Store objects (DSO) with data fields that are
overwritten. If errors occur, all subsequent data records with the same key are written to the error stack along
with the incorrect data record.
This guarantees the serialization of the data records, and consistent data processing. The serialization of the
data records and thus the explicit definition of key fields for the error stack are not relevant for targets that
are not updated by overwriting like Info Cube.

The fields in the source can be enabled in the semantic group definition as per the below rules:
 By default, all fields in the source that are uniquely assigned to a key field of the target DSO in the
transformation are checked in the semantic group screen.
 The fields whose assignment is not unique are not checked by default, but can be enabled.
 The fields in source which are assigned to the data field in the target DSO cannot be checked.

Figure 4:- Define Semantic Groups

© 2011 SAP AG 6


Step 4: Settings for Error Stack
Also the DTP Error Stack settings can be modified by clicking on the Goto  Settings for DTP Temporary
Storage of the DTP.
The various options available in the Settings for Temporary Storage are as given below:
 Delete Temporary Storage – To delete the records in the Error Stack as per below conditions:-

o With Request Status ‘Green’

o With Request Status ‘Red’

o After ‘x’ days

 Level of Detail - you specify how you want to track the transformation.

 Fill Temporary Storage - you specify the processing steps after which you want the system to
temporarily store the DTP request (such as extraction, filtering, removing new records with the same
key and transformation)

Figure 5:- Display Settings for DTP Temporary Storage

© 2011 SAP AG 7


Figure 6:- Settings for Temporary Storage

Step 5: Execute the DTP load
Save and activate the DTP after the settings are completed. Execute the DTP to load the data from the PSA
to the data target. If there are erroneous records in the data load, they are collected in the error stack.
You can access the error stack by clicking on the error stack on top of DTP.

Step 6: Validate Erroneous records in Error Stack
In the monitor for the data transfer process, you can navigate to the PSA maintenance by choosing Error
Stack in the toolbar, and display and edit erroneous records in the error stack.
Validate and correct the erroneous records similar to editing the PSA and save the records.

Figure 7:- Change Error Stack Data

© 2011 SAP AG 8


Step 7: Create and execute the Error DTP
Click on the Creating Error DTP on the Update tab of DTP to move data from error stack to the target. With
an error DTP, you can update the data records to the target manually or by means of a process chain. The
error DTP uses the full update mode to extract data from the error stack
Once the data records have been successfully updated, they are deleted from the error stack. If there are
any erroneous data records, they are written to the error stack again in a new error DTP request.
When a DTP request is deleted, the corresponding data records are also deleted from the error stack.

Figure 8:- Creating Error DTPs

Figure 9:- Error DTP in the Administrator Workbench

© 2011 SAP AG 9


Related Content
Handling of Data Records with Errors
Error Stack
Temporary Storage
For more information, visit the EDW homepage.

© 2011 SAP AG 10


Disclaimer and Liability Notice
This document may discuss sample coding or other information that does not include SAP official interfaces and therefore is not
supported by SAP. Changes made based on this information are not supported and can be overwritten during an upgrade.
SAP will not be held liable for any damages caused by using or misusing the information, code or methods suggested in this document,
and anyone using these methods does so at his/her own risk.
SAP offers no guarantees and assumes no responsibility or liability of any type with respect to the content of this technical article or
code sample, including any liability resulting from incompatibility between the content within this document and the materials and
services offered by SAP. You agree that you will not hold, or seek to hold, SAP responsible or liable with respect to the content of this
document.

© 2011 SAP AG 11

Using error stack and error dt ps in sap bi 7.0

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