AIX error "BFE4C025 P H sysplanar0 UNDETERMINED ERROR"

When checking the system, it was found that the system reported an error:

$errpt | head

BFE4C025 0529221011 P H sysplanar0 UNDETERMINED ERROR

Check the corresponding error number and find the following diagnostic information:

$errpt-aj BFE4C025

……

Diagnostic Analysis

Diagnostic Log sequence number: 31453

Resource tested: sysplanar0

Resource Description: System Planar

Location:

SRC=\'#\'"/ > Description: Memory subsystem including external cache Predictive

Error, general. Refer to the system service

Documentation for more information.

Additional Words: 2-030000F0 3-28EC0110 4-C13920FF 5-41000000

6-00811930 7-00000001 8-00A0008A 9-5600502A

Possible FRUs:

Priority: M FRU: 00P5773 S/N: YL1081315356 CCIN: 30D5

Location: U787B.001.DNW7118-P1-C9-C4)

……

Since it may be a memory problem, check the specific location:

$lscfg-pv | grep-p DIMM

Memory DIMM:

Product Specific. (RT) VINI

Flag Field.XXMS

System Info Specific. (YL)... U787B.001.DNW7118-P1-C9-C4

Customer Card ID Number.30D5

Serial Number.YL1081315356

Part Number.00P5773

FRU Number. 00P5773

Size....2048

Version.RS6K

Physical Location: U787B.001.DNW7118-P1-C9-C4

It is suspected that there are occasional problems with the matching of this group of memory after only a 2G memory has been replaced before. check the memory:

$lsattr-El mem0

Goodsize 32000 Amount of usable physical memory in Mbytes False

Size 32000 Total amount of physical memory in Mbytes Fasle

A set of memory has been replaced, which looks like ok, waiting for subsequent changes.