Photo caption validation rules for alt text requirements, locale handling, length constraints, and content restrictions

Photo Captions

CaptionsAltTextShouldNotMatch

Definition	Severity	API	Sample	Mode
Validate that altText does not match among different locale values

CaptionsAltText_SuspectedUnintentionalSequentialWordRepetition

Definition	Severity	API	Sample	Mode
Validate that altText does not include an unintentional repetitive sequence of words

PhotoCaptionsAltTextMustBePresent

Preconditions
captions are present

Definition	Severity	API	Sample	Mode
Validate that altText is present			Link

PhotoCaptionsAltTextMustNotBeEmpty

Definition	Severity	API	Sample	Mode
Validate that altText is not an empty string

PhotoCaptionsAltTextMustNotBeEntirelyNumeric

Definition	Severity	API	Sample	Mode
Validate that the altText value is not entirely numeric

PhotoCaptionsAltTextMustNotExceedMaximum

Definition	Severity	API	Sample	Mode
Validate that altText length does not exceed a maximum value (255)

PhotoCaptionsAltTextMustExceedMinimum

Definition	Severity	API	Sample	Mode
Validate that altText length exceeds a minimum value (5)

PhotoCaptionsAltTextMustNotIncludeUrl

Definition	Severity	API	Sample	Mode
Validate that altText does not include a URL			Link

PhotoCaptionsAltTextHasUnsupportedCharacter

Definition	Severity	API	Sample	Mode
Validate that altText does not include an unsupported character			Link

PhotoCaptionsAltTextMustNotBeDummyCharacters

Definition	Severity	API	Sample	Mode
Validate that altText is not dummy characters			Link

Example Validation Report

{
  "code": "VALIDATION__PhotoCaptionsAltTextMustNotBeDummyCharacters",
  "severity": "VIOLATION",
  "message": "'{{altText}}' is dummy characters",
  "context": {
    "altText": "No value"
  },
  "details": {
    "createdDate": "2026-02-10T11:36:02.00Z",
    "submitted": [],
    "compared": [],
    "expected": []
  }
}

PhotoCaptionsAltTextMustNotIncludeVulgarWord

Definition	Severity	API	Sample	Mode
Validate that altText does not include a vulgar word

PhotoCaptionsLocaleMustBeDistinct

Definition	Severity	API	Sample	Mode
Validate that each locale is distinct

PhotoCaptionsLocaleMustBePresent

Definition	Severity	API	Sample	Mode
Validate that locale is present

PhotoCaptionsLocaleMustBeValid

Definition	Severity	API	Sample	Mode
Validate that locale is valid			Link