Hello. I'm making a call to client.executeBatch with this resource:

{"resourceType":"Medication","identifier":[{"system":"https://aylohealth.com/medication/rxId","value":"282899"}],"code":{"coding":[{"system":"http://hl7.org/fhir/sid/ndc","code":"73796-79192","display":"10 Series+ BP Monitr/Upper Arm Device"},{"system":"https://aylohealth.com/medication/name","code":"10 Series+ BP Monitr/Upper Arm Device"}]},"form":{"coding":[{"system":"http://snomed.info/sct","code":"385055001","display":"Tablet"},{"system":"https://aylohealth.com/medication/formulation","code":"Device","display":"Device"},{"system":"https://aylohealth.com/medication/strength","code":"- "}]}}

and getting an error response:

{"outcome":{"resourceType":"OperationOutcome","issue":[{"severity":"error","code":"structure","details":{"text":"Invalid code format"},"expression":["Medication.form.coding.code"]}]},"status":"400"}

What is wrong with the resource structure I'm passing in?

https://github.com/medplum/medplum/blob/b1d63dfb33d7fb6bc3173f91208cfe3844542bba/packages/core/src/typeschema/validation.ts#L66 https://github.com/medplum/medplum/blob/b1d63dfb33d7fb6bc3173f91208cfe3844542bba/packages/core/src/typeschema/validation.ts#L449-L452 This is the validation regex for

code

:

ts
code: /^[^\s]+( [^\s]+)*$/,

I think that

-

is invalid

code

format FHIR spec for

code

format https://arc.net/l/quote/behhnvxa

Thanks @node5585. Now I see that the culprit was this: "code":"- "

Thanks for the follow up @yhabotensomata !