Wex Health and Benefits APIs

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Update Plan

Header Parameters

If-Matchstring Required

ETag value for optimistic locking. Use the etag value from the previous GET or POST response to prevent conflicting updates.

Authorizationstring

Path Parameters

plan_idstring Required

Plan ID

Body Parameters

plan_year_idstring Required

Associated plan year ID

namestring Required

Internal name of the plan

display_namestring Required

Display name of the plan

plan_typestring Required

Type of benefits plan

merchant_category_networkstring | null

Merchant category network for the plan

versioninteger Required

Current version for optimistic locking

Response

200
Object

Plan updated successfully

Response Attributes

etagstring

ETag value for optimistic locking. Use this value in the If-Match header for subsequent update requests.

dataobject Required

Show child attributes

400
Object

Bad Request – Validation failed. The errors map keys mirror the snake_case JSON property names used in the request payload.

Response Attributes

typestring | null
titlestring | null
statusinteger | null
detailstring | null
instancestring | null
invalid_paramsarray | null

List of invalid parameters that caused the validation error.

Max items
10

Show child attributes

errorsobject

Human-readable validation error messages keyed by field name. Each key maps to one or more error message strings.

Show child attributes

validation_errorsobject

Field-level validation errors keyed by field name. Each key maps to one or more structured error details.

401
Object

Unauthorized – Missing or invalid credentials.

Response Attributes

typestring | null
titlestring | null
statusinteger | null
detailstring | null
instancestring | null
invalid_paramsarray | null

List of invalid parameters that caused the validation error.

Max items
10

Show child attributes

errorsobject

Human-readable validation error messages keyed by field name. Each key maps to one or more error message strings.

validation_errorsobject

Field-level validation errors keyed by field name. Each key maps to one or more structured error details.

404
Object

Not Found – Employee record does not exist.

Response Attributes

typestring | null
titlestring | null
statusinteger | null
detailstring | null
instancestring | null
invalid_paramsarray | null

List of invalid parameters that caused the validation error.

Max items
10

Show child attributes

errorsobject

Human-readable validation error messages keyed by field name. Each key maps to one or more error message strings.

validation_errorsobject

Field-level validation errors keyed by field name. Each key maps to one or more structured error details.

409
Object

Conflict – Returned for duplicate-record conflicts and optimistic concurrency version mismatches. See duplicate_record and version_conflict examples.

Response Attributes

typestring | null
titlestring | null
statusinteger | null
detailstring | null
instancestring | null
invalid_paramsarray | null

List of invalid parameters that caused the validation error.

Max items
10

Show child attributes

errorsobject

Human-readable validation error messages keyed by field name. Each key maps to one or more error message strings.

validation_errorsobject

Field-level validation errors keyed by field name. Each key maps to one or more structured error details.

412
Object

Precondition failed - version mismatch

Response Attributes

typestring | null
titlestring | null
statusinteger | null
detailstring | null
instancestring | null
invalid_paramsarray | null

List of invalid parameters that caused the validation error.

Max items
10

Show child attributes

errorsobject

Human-readable validation error messages keyed by field name. Each key maps to one or more error message strings.

validation_errorsobject

Field-level validation errors keyed by field name. Each key maps to one or more structured error details.

500
Object

Internal Server Error.

Response Attributes

typestring | null
titlestring | null
statusinteger | null
detailstring | null
instancestring | null
invalid_paramsarray | null

List of invalid parameters that caused the validation error.

Max items
10

Show child attributes

errorsobject

Human-readable validation error messages keyed by field name. Each key maps to one or more error message strings.

validation_errorsobject

Field-level validation errors keyed by field name. Each key maps to one or more structured error details.

default
Object

Unexpected error

Response Attributes

typestring | null
titlestring | null
statusinteger | null
detailstring | null
instancestring | null
invalid_paramsarray | null

List of invalid parameters that caused the validation error.

Max items
10

Show child attributes

errorsobject

Human-readable validation error messages keyed by field name. Each key maps to one or more error message strings.

validation_errorsobject

Field-level validation errors keyed by field name. Each key maps to one or more structured error details.

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Response

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