reflectedworkitemid "not in hidden workitem types"

[wishy78]

i am trying to migrate over a projects work items from 1 ADO organisation to another ADO organisation,

but i get the error :
Some work item types or their fields are not present in the target system (see previous logs). Either add the fields into the target work items, or map source fields to other target fields to other target fields in options (sourceFieldMappings)

there was some custom drop down that i sorted but still get the above error

The only items left in the log was a warning on 6 hidden work item types saying:
[Work item type] does not contain reflected work item ID field 'custom.reflectedworkitemid'

where [work item type] is replaced with one of the following:
code review request
code review response
feedback request
feedback response
shared steps
shared parameter

any advice or direction would be appreciated please?

Thanks
Jon

[MrHinsh]

You are hitting the https://devopsmigration.io/docs/reference/tools/work-item-type-validator-tool/ which runs before the work them are loaded.