SM30 and AUTHORITY-CHECK

Question

Hi experts !
Is There a way to see if the user has authority to chance the table view ? All users can see the data but not all can chance but i can't block the transaction.
I also need show just some fields. The table has 7 fields but i can show just 4. How to do that ??
Last doubt. The others 3 fields that do not appear I need to enter some informations like date and hour.
Thx in advance.

Answer 1

Hi
At role Level you can keep the Authrization check for the Tcodes (PFCG tcode)
using auth objects you can keep authorization check on the table fields or fields in a transaction
see the following
In general different users will be given different authorizations based on their role in the orgn.
We create ROLES and assign the Authorization and TCODES for that role, so only that user can have access to those T Codes.
USe SUIM and SU21 T codes for this.
Much of the data in an R/3 system has to be protected so that unauthorized users cannot access it. Therefore the appropriate authorization is required before a user can carry out certain actions in the system. When you log on to the R/3 system, the system checks in the user master record to see which transactions you are authorized to use. An authorization check is implemented for every sensitive transaction.
If you wish to protect a transaction that you have programmed yourself, then you must implement an authorization check.
This means you have to allocate an authorization object in the definition of the transaction.
For example:
program an AUTHORITY-CHECK.
AUTHORITY-CHECK OBJECT <authorization object>
ID <authority field 1> FIELD <field value 1>.
ID <authority field 2> FIELD <field value 2>.
ID <authority-field n> FIELD <field value n>.
The OBJECT parameter specifies the authorization object.
The ID parameter specifies an authorization field (in the authorization object).
The FIELD parameter specifies a value for the authorization field.
The authorization object and its fields have to be suitable for the transaction. In most cases you will be able to use the existing authorization objects to protect your data. But new developments may require that you define new authorization objects and fields.
http://help.sap.com/saphelp_nw04s/helpdata/en/52/67167f439b11d1896f0000e8322d00/content.htm
To ensure that a user has the appropriate authorizations when he or she performs an action, users are subject to authorization checks.
Authorization : An authorization enables you to perform a particular activity in the SAP System, based on a set of authorization object field values.
You program the authorization check using the ABAP statement AUTHORITY-CHECK.
AUTHORITY-CHECK OBJECT 'S_TRVL_BKS'
ID 'ACTVT' FIELD '02'
ID 'CUSTTYPE' FIELD 'B'.
IF SY-SUBRC <> 0.
MESSAGE E...
ENDIF.
'S_TRVL_BKS' is a auth. object
ID 'ACTVT' FIELD '02' in place 2 you can put 1,2, 3 for change create or display.
The AUTHORITY-CHECK checks whether a user has the appropriate authorization to execute a particular activity.
This Authorization concept is somewhat linked with BASIS people.
As a developer you may not have access to access to SU21 Transaction where you have to define, authorizations, Objects and for nthat object you assign fields and values. Another Tcode is PFCG where you can assign these authrization objects and TCodes for a  profile and that profile in turn attached to a particular user.
Take the help of the basis Guy and create and use.
Regards
Anji