This message is generated by an attempt to change the value of $MinPrecision or $MaxPrecision while the value has been temporarily locked by an internal function.
The values of $MinPrecision and $MaxPrecision are locked briefly by certain numerical algorithms. It is normally not desirable to allow the precision to vary during these calculations.
There are no common examples in which this message is generated. If you find an example in which this message is generated and have questions about the cause, please contact Technical Support.
Off[message] switches off the message; On[message] switches it on. For example: Off[$MinPrecision::preclck].