afv-library/skills/salesforce-experience-lwr-site/docs/handle-component-and-region-ids.md

UUID Generation

Use when handling IDs for components and regions of views. All component and region IDs in Experience Site content must be unique UUIDs.

Requirements

1. Format: Lowercase UUID v4 (e.g., 5d56a22f-c1e8-40d3-92ec-6e10e71e36de)
2. Uniqueness: Must be unique across ALL content.json files in site (under digitalExperiences/site/<SITE_NAME>/)

For New content.json Files Only

Multistep Process (REQUIRED):

• CRITICAL: Each step must be performed separately - do NOT combine steps into a single automated command or script
• Step 1: Create files with descriptive placeholders for UUIDs (e.g., UUID_CONTENT_REGION, UUID_HIDDEN_REGION, UUID_SEO_COMPONENT)
• Step 2: Count the total number of UUID placeholder occurrences in the generated file, then generate exactly that many UUIDs using:
  • node -e "console.log(Array.from({length: N}, () => require('crypto').randomUUID()).join('\n'))" where N is the total count of placeholder occurrences. Present this command to the user for execution.
• Step 3: Replace each placeholder occurrence sequentially with the generated UUIDs from the list, ensuring each occurrence gets a unique UUID from the list. Perform replacements one at a time or in small batches - do NOT automate this with scripts.
• Step 4: Validate that all placeholders have been replaced - read the file and search for any remaining placeholder patterns (e.g., UUID_). The file is NOT valid until all placeholders are replaced with actual UUIDs.
• CRITICAL: Every single placeholder occurrence must be replaced with a DIFFERENT UUID from the generated list, even if the placeholder name is repeated. For example, if you have 5 total placeholder occurrences, generate 5 UUIDs and replace each occurrence with the next UUID from the list.
• NEVER write UUIDs inline during file creation - always use the multistep placeholder approach

For Editing Existing content.json Files

• CRITICAL: Read file first and preserve all existing UUIDs exactly as-is
• NEVER replace existing UUIDs with placeholders
• For newly added components/regions only, follow the multistep placeholder process from step 3