Message WM014 - Assortement by LSMW

Hello,

I want to integrate Assortement by LSMW in SAP ECC.

At the end of the idoc generation, I have error messages:

Module 000000010000000868 valable uniquement du 20140513 au 99991231

(Module 000000010000000868 only avalable from 20140513 to 99991231)

N° message WM014

In the table WSOH,  I have all the modules which have a validaty date from today until 99991231

And in my idoc, the assortement have an avaibility date from 20130101

NB. At the beginning, my tables are empty.

Thank you for your help

Laura