Eurotherm PAC T2550 Errors

I am using eurotherm PAC T2550. While building full project, I am getting following error.

Error: Unable to add new LIN block T25.

Here T25 is my tag name. I checked that T25 tag is defined, in analog input module. and while taking LIN workspace online, this tag is also communication. having similar error for so many other physical I/O tags and for some other blocks like, IDENT_0A (0A is node address),ODIAG_0A, DDIAG_0A, EIODI_0A and many others. all these are showing error, unable to add new lin block.

Please help me to rectify this problem.

Thanks in Advance.

Bhargav Purohit.