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Former Member
Oct 08, 2009 at 06:38 AM

History cannot be entered in book



i am getting following error while running a process chain.


History cannot be entered in book, you cannot save data

Message no. /SAPAPO/SDP129


The history horizon of your planning book is not ready for input (you cannot make entries here).

System Response

Data that was calculated in this horizon cannot be saved.


Change the history horizon so that it is ready for input. Make sure you always use different planning books for background and interactive planning.


i am not able to understand the message.

please help me what is to be done when i get this message. ( with T-codes if possible)