I have a workspace reading a FileGeoDatabase, containing coded domains, which are used on certain attributes in the featureclass.

I also have a writer - File GeoDatabase

FeatureClass Definition - Copy from Reader

and I want to write to a NEW Table using the existing Domain.

The values going to my writer are acceptable domain values

I follow the stages set here - https://community.safe.com/s/article/working-with-geodatabase-subtypes-and-domains

Setting coded value in the output data types and referring to the existing domain.

however whenever it gets to my writer I hit - this error message:

The attribute definition used is invalid for the non-existent domain 'Suitability'. For a coded value domain the proper syntax is 'coded_domain(domain_name:field_type:name_1:value_1: ... name_n:value_n)'

I'm not sure what's causing this, the domain is being read fine, and is definitely present in the source data