DDR3 memory controller Termination calibration error.

I could solve the above error by assigning the dedicated pin for RZQIN port. But I am facing following errors during fitter.

Error (174052): I/O "io_bot_mem_dq[0]" has dynamic termination control connected, but does not use parallel termination

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Error (174052): I/O "io_bot_mem_dq[15]" has dynamic termination control connected, but does not use parallel termination

Error (174052): I/O "io_bot_mem_dqs[0]" has dynamic termination control connected, but does not use parallel termination

Error (174052): I/O "io_bot_mem_dqs[1]" has dynamic termination control connected, but does not use parallel termination

Error (174052): I/O "io_bot_mem_dqs_n[0]" has dynamic termination control connected, but does not use parallel termination

Error (174052): I/O "io_bot_mem_dqs_n[1]" has dynamic termination control connected, but does not use parallel termination

It seems like fitter is giving this error for all the Inout ports of DDR3 memory interface. What does this error mean? What is causing this error to appear?