docusign api tabs wont populate - rest

Question

I've built a create envelope API call that has 7 tabs, I set the values but two fields will not populate. Company and Title are always blank. I set the tab labels programmatically from the /envelopes/{templateId} API request so I know it is correct.
{
"emailSubject": "Test Email",
"emailBlurb": "This is for testing docusign api",
"templateId": "cf5a9348-0d05-44ab-b0ac-8847303aa0ba",
"templateRoles": [
{
"email": "swilliams#email.com",
"name": "Shawn Williams",
"roleName": "Signee",
"tabs": {
"fullNameTabs": [
{
"tabLabel": "Name 67755b0d-2284-4f20-acab-9ea4391f0e15",
"value": "Shawn Williams"
}
],
"companyTabs": [
{
"tabLabel": "Company f9d5d265-9d97-42ba-a6ec-0d36f38b1017",
"value": "SD"
}
],
"titleTabs": [
{
"tabLabel": "Title 35713ae4-3330-4864-b37c-066873fc0d6e",
"value": "MR"
}
],
"ssnTabs": [
{
"tabLabel": "SSN",
"value": "123-45-6789"
}
],
"firstNameTabs": [
{
"tabLabel": "F_Name",
"value": "Shawn"
}
],
"lastNameTabs": [
{
"tabLabel": "L_Name",
"value": "W"
}
],
"emailAddressTabs": [
{
"tabLabel": "Email",
"value": "swilliams#email.org"
}
]
}
}
],
"transactionId": "test-20-id",
"status": "sent"
}
Thank you in advance for your help.

Answer 1

Not all DocuSign tabs can be populated. Some are calculated based on Recipients data and User Profile.
From Documentation :
Some tabs automatically populate with the recipient's data (such as emailTabs or fullNameTabs) while others require the signer to enter some information (textTabs) or make a choice (listTabs, checkboxTabs, radioGroupTabs).
If you want to populate data during envelope creation, textTabs might be a better choice.
Also see these related answers
Full list of tabs whose values can be set
Answer Two