cyclone V,quartusII 14.0,use lvds RX error

Error (14566): Could not place 3 periphery component(s) due to conflicts with existing constraints (3 pin(s))

Error (175020): Illegal constraint of pin to the region (16, 0) to (31, 0): no valid locations in region

Info (14596): Information about the failing component:

Info (175028): The pin name: cl_y_p[0]

Info (14597): No legal location could be found for this component out of 1 considered location(s). Reasons why each location could not be used are summarized below:

Info (175015): The I/O pad cl_y_p[0] is constrained to the location PIN_U11 due to: User Location Constraints (PIN_U11)

Info (14709): The constrained I/O pad is contained within this pin

Error (175010): Location failed detailed legality checks (1 location affected)

Info (175029): pin containing PIN_U11

Error (175020): Illegal constraint of pin to the region (16, 0) to (31, 0): no valid locations in region

Info (14596): Information about the failing component:

Info (175028): The pin name: cl_y_p[1]

Info (14597): No legal location could be found for this component out of 1 considered location(s). Reasons why each location could not be used are summarized below:

Info (175015): The I/O pad cl_y_p[1] is constrained to the location PIN_V9 due to: User Location Constraints (PIN_V9)

Info (14709): The constrained I/O pad is contained within this pin

Error (175010): Location failed detailed legality checks (1 location affected)

Info (175029): pin containing PIN_V9

Error (175020): Illegal constraint of pin to the region (16, 0) to (31, 0): no valid locations in region

Info (14596): Information about the failing component:

Info (175028): The pin name: cl_y_p[2]

Info (14597): No legal location could be found for this component out of 1 considered location(s). Reasons why each location could not be used are summarized below:

Info (175015): The I/O pad cl_y_p[2] is constrained to the location PIN_M8 due to: User Location Constraints (PIN_M8)

Info (14709): The constrained I/O pad is contained within this pin

Error (175010): Location failed detailed legality checks (1 location affected)

Info (175029): pin containing PIN_M8

Error (12289): An error occurred while applying the periphery constraints. Review the offending constraints and rerun the Fitter.

Error (11802): Can't fit design in device

Error: Quartus II 64-Bit Fitter was unsuccessful. 9 errors, 6 warnings

Error: Peak virtual memory: 1139 megabytes

Error: Processing ended: Mon Oct 24 09:53:44 2016

Error: Elapsed time: 00:00:32

Error: Total CPU time (on all processors): 00:00:32

Error (293001): Quartus II Full Compilation was unsuccessful. 11 errors, 259 warnings