Error in mapping while generating bitstream

Question

While generating bitstream in xps-14.2 i am getting error related to mapping:
ERROR:MapLib:978 - LUT6 symbol
"RS232_Uart_1/RS232_Uart_1/UARTLITE_CORE_I/UARTLITE_RX_I/running_valid_start_ AND_8_o_SW0" (output signal=RS232_Uart_1/N6) has an equation that uses input
pin I2, which no longer has a connected signal. Please ensure that all the
pins used in the equation for this LUT have signals that are not trimmed (see
Section 5 of the Map Report File for details on which signals were trimmed).
ERROR:MapLib:978 - LUT6 symbol
"RS232_Uart_1/RS232_Uart_1/UARTLITE_CORE_I/UARTLITE_RX_I/running_valid_start_ AND_8_o_SW0" (output signal=RS232_Uart_1/N6) has an equation that uses input
pin I4, which no longer has a connected signal. Please ensure that all the
pins used in the equation for this LUT have signals that are not trimmed (see
Section 5 of the Map Report File for details on which signals were trimmed).
ERROR:MapLib:978 - LUT4 symbol
"RS232_Uart_1/RS232_Uart_1/UARTLITE_CORE_I/UARTLITE_RX_I/stop_Bit_Position_EN _16x_Baud_AND_16_o1" (output
signal=RS232_Uart_1/RS232_Uart_1/UARTLITE_CORE_I/UARTLITE_RX_I/stop_Bit_Posit
ion_EN_16x_Baud_AND_16_o) has an equation that uses input pin I0, which no
longer has a connected signal. Please ensure that all the pins used in the
equation for this LUT have signals that are not trimmed (see Section 5 of the
Map Report File for details on which signals were trimmed).
ERROR:MapLib:978 - LUT6 symbol
"RS232_Uart_1/RS232_Uart_1/UARTLITE_CORE_I/status_reg_1_glue_set" (output
signal=RS232_Uart_1/RS232_Uart_1/UARTLITE_CORE_I/status_reg_1_glue_set) has
an equation that uses input pin I2, which no longer has a connected signal.
Please ensure that all the pins used in the equation for this LUT have
signals that are not trimmed (see Section 5 of the Map Report File for
details on which signals were trimmed).
I go through the forum for this error ,i found some answers but still not able to resolve my error.
Thank you.

Answer 1

Yes that error is resolved,Thank you very much .
mapping error related to uart signal is resolved but some mapping errors are remaining:
ERROR:MapLib:979 - LUT2 symbol
"proc_sys_reset_0/proc_sys_reset_0/EXT_LPF/External_System_Reset_MB_Debug_Sys _Rst_OR_8_o1" (output
signal=proc_sys_reset_0/proc_sys_reset_0/EXT_LPF/External_System_Reset_MB_Deb
ug_Sys_Rst_OR_8_o) has input signal "RESET" which will be trimmed. See
Section 5 of the Map Report File for details about why the input signal will
become undriven.
ERROR:MapLib:978 - LUT2 symbol
"proc_sys_reset_0/proc_sys_reset_0/EXT_LPF/External_System_Reset_MB_Debug_Sys _Rst_OR_8_o1" (output
signal=proc_sys_reset_0/proc_sys_reset_0/EXT_LPF/External_System_Reset_MB_Deb
ug_Sys_Rst_OR_8_o) has an equation that uses input pin I0, which no longer
has a connected signal. Please ensure that all the pins used in the equation
for this LUT have signals that are not trimmed (see Section 5 of the Map
Report File for details on which signals were trimmed). 
 Now in ucf file, for which signal i have to apply the "s" property.