VNX2 reports event 0x71704000, (Replay-Number Rollover Threshold Exceeded)(Dell EMC Correctable)

Error: Bus:0x14, Device:0x0, Function:0x0, Offset:0x3FFC4 Count:0x4 Replay-Number Rollover Threshold Exceeded.
00 00 04 00 0b 00 2c 00 d3 04 00 00 05 80 70 e1 05 80 70 e1 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 71 70 80 05

SPB was generating Replay Timer Timeout Error " and "Replay-Number Rollover Threshold Exceeded" messages.
From logs we can observe hardware errors for SPB CPU module and SPB IO Module 4.

- We would recommend replacing SP X CPU module.
- However before replacing any CPU module, check midplane SP connectors for bent pins.
- If found any, DO NOT INSERT THE NEW CPU MODULE, replace the midplane first.
- If replacement of CPU modules doesn't resolve the issue, midplane will need to be replaced next.

- Also would recommend to replace SPX IO Module Y. 'B:0x0,D:0x1,F:0x0' in below messages point to the link between the processor (Sandy/Ivy Bridge) and SLIC W.

Reference AR#1016968