We are writing Passive TOU day profile which have 4 day table and 8 rate in each table, when we write all 4 day table with 8 rate in all table and it start transfer success for 2-3 packet and post this next command failed and getting error "Service Not Allowed", but when we reduce the data means select only few rate in all table so getting all success.
We analyse that if Payload size is <512 Byte able to write successfully in block transfer, but if no. of payload >512 byte this scenario regenerated using library as well as DLMS director.