diff --git a/devices/SDP.py b/devices/SDP.py
index ab41bbc6197d137ab7732456192af88f2043f014..7db55b341b5a7a86bcef2b0e9f04a44639ad7d4b 100644
--- a/devices/SDP.py
+++ b/devices/SDP.py
@@ -82,12 +82,12 @@ class SDP(hardware_device):
     fpga_sst_offload_dest_ip_R = attribute_wrapper(comms_annotation=["1:fpga_sst_offload_dest_ip_R"], datatype=numpy.str_, dims=(16,))
     fpga_sst_offload_dest_port_RW = attribute_wrapper(comms_annotation=["1:fpga_sst_offload_dest_port_RW"], datatype=numpy.uint16, dims=(16,), access=AttrWriteType.READ_WRITE)
     fpga_sst_offload_dest_port_R = attribute_wrapper(comms_annotation=["1:fpga_sst_offload_dest_port_R"], datatype=numpy.uint16, dims=(16,))
-    fpga_sdp_info_station_id_RW = attribute_wrapper(comms_annotation=["1:fpga_sdp_info_station_id_RW"], datatype=numpy.uint16, access=AttrWriteType.READ_WRITE)
-    fpga_sdp_info_station_id_R = attribute_wrapper(comms_annotation=["1:fpga_sdp_info_station_id_R"], datatype=numpy.uint16)
-    fpga_sdp_info_observation_id_RW = attribute_wrapper(comms_annotation=["1:fpga_sdp_info_observation_id_RW"], datatype=numpy.uint32, access=AttrWriteType.READ_WRITE)
-    fpga_sdp_info_observation_id_R = attribute_wrapper(comms_annotation=["1:fpga_sdp_info_observation_id_R"], datatype=numpy.uint32)
-    fpga_sdp_info_source_id_RW = attribute_wrapper(comms_annotation=["1:fpga_sdp_info_source_id_RW"], datatype=numpy.uint16, access=AttrWriteType.READ_WRITE)
-    fpga_sdp_info_source_id_R = attribute_wrapper(comms_annotation=["1:fpga_sdp_info_source_id_R"], datatype=numpy.uint16)
+    fpga_sdp_info_station_id_RW = attribute_wrapper(comms_annotation=["1:fpga_sdp_info_station_id_RW"], datatype=numpy.uint16, dims=(16,), access=AttrWriteType.READ_WRITE)
+    fpga_sdp_info_station_id_R = attribute_wrapper(comms_annotation=["1:fpga_sdp_info_station_id_R"], datatype=numpy.uint16, dims=(16,)) 
+    fpga_sdp_info_observation_id_RW = attribute_wrapper(comms_annotation=["1:fpga_sdp_info_observation_id_RW"], datatype=numpy.uint32, dims=(16,), access=AttrWriteType.READ_WRITE)
+    fpga_sdp_info_observation_id_R = attribute_wrapper(comms_annotation=["1:fpga_sdp_info_observation_id_R"], datatype=numpy.uint32, dims=(16,))
+    fpga_sdp_info_source_id_RW = attribute_wrapper(comms_annotation=["1:fpga_sdp_info_source_id_RW"], datatype=numpy.uint16, dims=(16,), access=AttrWriteType.READ_WRITE)
+    fpga_sdp_info_source_id_R = attribute_wrapper(comms_annotation=["1:fpga_sdp_info_source_id_R"], datatype=numpy.uint16, dims=(16,))
 
     tr_busy_R = attribute_wrapper(comms_annotation=["1:tr_busy_R"], datatype=numpy.bool_)
     # NOTE: typo in node name is 'tr_reload_W' should be 'tr_reload_RW'