diff --git a/data/data.yaml b/data/data.yaml
index 56febb6..7a77041 100644
--- a/data/data.yaml
+++ b/data/data.yaml
@@ -5,24 +5,28 @@ properties:
       Change branch name.
     type: string
     defaultvalue: "main"
+    required: false
 
   - name: commit_ref
     description: |
       Git commit ref.
     type: string
     defaultvalue: "refs/heads/main"
+    required: false
 
   - name: commit_sha
     description: |
       Git commit sha.
     type: string
     defaultvalue: $CI_COMMIT_SHA
+    required: false
 
   - name: depth
     description: |
       Clone depth.
     type: integer
     defaultvalue: 0
+    required: false
 
   - name: insecure_skip_ssl_verify
     description: |
@@ -31,79 +35,93 @@ properties:
       Activating this option is insecure and should be avoided in most cases.
     type: bool
     defaultvalue: false
+    required: false
 
   - name: lfs
     description: |
       Whether to retrieve LFS content if available.
     type: bool
     defaultvalue: true
+    required: false
 
   - name: partial
     description: |
       Enable/disable partial clone.
     type: bool
     defaultvalue: false
+    required: false
 
   - name: recursive
     description: |
       Clone submodules.
     type: bool
     defaultvalue: true
+    required: false
 
   - name: remote
     description: |
       Git remote HTTP clone url.
     type: string
     defaultvalue: $CI_REPO_CLONE_URL
+    required: false
 
   - name: remote_ssh
     description: |
       Git remote SSH clone url.
     type: string
     defaultvalue: $CI_REPO_CLONE_SSH_URL
+    required: false
 
   - name: safe_directory
     description: |
       Define/replace safe directories.
     type: string
     defaultvalue: $CI_WORKSPACE
+    required: false
 
   - name: ssh_key
     description: |
       Private key for SSH clone.
     type: string
+    required: false
 
   - name: submodule_override
     description: |
       JSON map of submodule overrides.
     type: generic
+    required: false
 
   - name: submodules_partial
     description: |
       Update submodules via partial clone (`depth=1`).
     type: bool
     defaultvalue: true
+    required: false
 
   - name: submodules_update_remote
     description: |
       Update remote submodules.
     type: bool
     defaultvalue: false
+    required: false
 
   - name: tags
     description: |
       Fetch git tags during clone.
     type: bool
     defaultvalue: true
+    required: false
 
   - name: use_ssh
     description: |
       Using SSH for git clone.
     type: bool
     defaultvalue: false
+    required: false
 
   - name: workdir
     description: |
       Path to clone git repository.
     type: string
     defaultvalue: $CI_WORKSPACE
+    required: false