Bad PNI status while processing shadow array for ArrayKeyMapper

When I run loadHier I get error print as follow:

Now executing loadHier in domain '<my_domain_path_and_name>'.

dbbackupmanager completed successfully

Begin multiparent check for PRODMASTER array.

Begin multiparent check for NEW_DIM_SKU array. (Add old ext map.)

End multiparent check for NEW_DIM_SKU array. No problem found.

Unhandled exception in PNIMap: [[Bad PNI status while processing shadow array for ArrayKeyMapper.]].

loadHier failed on domain: <my_domain_path_and_name>

Bad PNI status while processing shadow array for ArrayKeyMapper.

dbbackupmanager completed successfully

dbbackupmanager completed successfully

loadHier exited with status: 3

LoadHier failed - status 3

load_hierarchy | 20170112 01:39:15 | load_hierarchy | Error code: 16 | Error found during loading of hierarchy file to domain - total error count 3.