The data type "ufix1" uses a word size that is not available on the intended target

While compiling my simulink RTI model i recieve this error:

Warning:  The data type "ufix1" uses a word size that is not available on the intended target.
    Fixed-point signals using this data type will be put inside a larger word or multi words.  When used,
extra software will be generated to force this larger word or multi words to emulate a smaller
word.  This emulation is helpful when your prototype target and your final
production target are not the same.  If the smaller word size does NOT exist
on the final production target, then consider increasing the word size to
one that is supported.

Is there a way to solve this error? and other question, is there a way to search for specific datatype (ex. ufix1) inside Simulink Model?

[Walter Roberson]

Is your intention to eventually deploy to an ASIC or FPGA? If so then leave the code as-is so that eventually it will be right.

http://www.mathworks.com/help/comm/ref/integertobitconverter.html