How to create item with rule generated item numbering using REST API

Summary:

Is it possible to create Items using REST API where the Item Class is configured to have rule generated Item numbering sequence

Content (please ensure you mask any confidential information):

The rule for Item Number generation involves EFF. Need a sample payload for this requirement

Version (include the version you are using, if applicable):

25B

Code Snippet (add any code snippets that support your topic, if applicable):

Tried using this payload but getting error :

{
"OrganizationCode":"MASTER_ORG",
"ItemClass" : "Relic",
"ItemDescription" : "Test Relic Item Create",
"ItemEffCategory": [
{
"CategoryCode": "FCT_Relic",
"RelicItemNumbering":
[{
"prefix": "REL"
}
]
}
]
}