OB28 validation: not possible to clear future documents

Question

Hi dudes,
I'm looking for how to build an FI validation (if possible) on OB28.
The purpose is to block users to clear a document of a future year.
Ex.
billing document y. 2009
payment document y.2010
the users create a clearing document with y.2009
It's possible to block this action with a simple OB28 validation?
I tried with a BKPF-BUDAT < BSEG-AUGDT but possibly I can't use two different tables on the same validation step.
Thanks.
Regards

Answer 1

You can use a exit in your validation.
1. Check that you have declared the form pool for application area "GBLR" validations in View V_T80D_SL. If not, then enter the name of the form pool (e.g. YRGGBR000) and copy the standard program RGGBR000 to the new program (e.g. YRGGBR000).
2. Declare the exit (the exit name, by convention is U9<XX>, where <XX> is a serial number.) after data statements in "FORM get_exit_titles" as follows:
form for Future Clearing
  exits-name  = 'U9<XX>'.                  "Description/ Purpose
  exits-param = c_exit_param_none.       
  exits-title = text-9<XX>.                     "Name of the exit
  APPEND exits.
3. Put your Code/ Logic in a new form "U9XX"  as follows:
FORM U9<XX>  USING b_result.
<PUT YOUR OWN CODE HERE>
*All fields of Tables BKPF, BSEG, COBL, GLU1 & ANLA are available here>
*REMEMBER - Some of the field values might not have been populated>.
ENDFORM.
4. Maintain text symbol U9<XX>, activate the form pool/ text symbol and exit.
5. Use OB28 to create a new step in a new or existing validation at suitable call up point.
6. Enter any pre-requisite, if required.
7. Select the "Check" node of your validation step. select "Exits" tab. You will find your exit U9<XX> here. Double click on it to insert in the "Check" code.
8. Select the "Message" Node of your validation step and enter the message type, no and variables. Save & Exit.
Regards
K.K. Tripathi