Documentation: type of the Data source persistent_identity_systems.for

[katja-moilanen]

The documentation text says that persistent_identity_systems.for is string but in the example it is list.

text:
for String (mandatory): The Product type to which the persistent identifier is referring to. To choose from...

example:
"persistent_identity_systems": [
{
"pid_schemes": [ "doi", "arxiv" ],
"for": [ "literature" ]
},
{
"pid schemes": [ "doi" ],
"for": [ "metadata" ]
}
]

Which one is correct?