How to delete an Odata service while TADIR processing ?

Hi experts !

I've some troubles with the SRA021_SRV and hence I want to remove it in order to active it later again. In /IWFND/MAINT_SERVICE I delete the ICF Node, then the System Alias and finally I try to delete the service but that message occurs : Exception occurred while TADIR processing. How could I do ?

Thanks for your help and sorry if the thread already exists but I didn't find it...