CSV format for batch certificate enrollment

Batch certificate enrollment in DigiCert® Device Trust Manager enables you to submit multiple certificate requests in a single job using a CSV file. This reference details the required CSV structure to ensure successful batch processing.

The CSV file used for batch certificate enrollment must contain a header row followed by one or more data rows.

Header row: Defines the fields for each certificate request, including:
- Unique identifier (optional)
- Certificate attributes
- Device attribute fields
- CSR (if required by the certificate management policy)
Data rows: Contain the certificate request values for each field defined in the header row. Make sure each value in a data row matches the corresponding header to maintain alignment and proper processing.

CSV header details

Unique identifier (optional)

To uniquely identify each certificate request, include the unique_identifier column in the header row. This helps distinguish output files when certificate values are not unique.

Output file naming: If a certificate request includes a unique_identifier, output files are named using that value (e.g., <unique_identifier_value>.pem).
Without a unique identifier: The system appends a random value to output file names to avoid duplicates, indicated with a WARNING status in the batch job report.

Certificate attributes

Include headers for the required certificate attributes based on your certificate profile configuration, such as:

Subject attributes, such as subject.common_name)
SAN (Subject Alternative Name) attributes
Extensions
Key usage and extended key usage attributes

Note

If a certificate attribute is specified in both the CSR and the CSV column, the value in the CSV column takes precedence and will be used in the request.

The following table outlines the header cell values, expected data cell value formats, and descriptions for each certificate attribute used in CSV files for batch certificate enrollment.

Table 1. Certificate attribute details

Header cell value	Data cell value	Description
subject.common_name	Single value	Subject DN common name.
subject.organization_name	Single value	Subject DN organization name.
subject.organization_unit	Single or multiple values	Subject DN organization units.
subject.country	Single value	Subject DN country.
subject.state	Single value	Subject DN state.
subject.locality	Single value	Subject DN locality.
subject.street_address	Single value	Subject DN address.
subject.postal_code	Single value	Subject DN postal code.
subject.unique_identifier	Single value	Subject DN unique identifier.
subject.email	Single value	Subject DN email.
subject.domain_component	Single or multiple values	Subject DN domain components.
san.critical	Yes or no	If yes, SAN is critical. Otherwise, no.
san.dns_name	Single value	SAN DNS names.
san.user_principal_name	Single or multiple values	SAN user principal names (UPN).
san.email	Single or multiple values	SAN emails.
san.other_name	SAN other name value, formatted as a JSON string	SAN other name. To learn how to format this value, visit Subject directory attributes (SDA).
san.other_name.hardware_module_name.type	Single OID value	SAN hardware module name type.
san.other_name.hardware_module_name.serial_number	Single HEX string value	SAN hardware module name serial number.
extensions.subject_directory	Subject directory attribute value, formatted as a JSON string	Subject directory attributes value. To learn how to format this value, visit Subject directory attributes (SDA).
key_usage.critical	Yes or no	If yes, key usage is critical. Otherwise, no.
key_usage.rsa_additional_values	Single or multiple values	Key usage values for RSA key.
key_usage.ecdsa_additional_values	Single or multiple values	Key usage values for EC key.
extended_key_usage.critical	Yes or no	If yes, extended key usage is critical. Otherwise, no.
extended_key_usage.additional_values	Single or multiple values	Extended key usage values.

CSR

If your certificate management policy requires a CSR for generating the device's x.509 bootstrap certificate, include it in the csr column.

CSRs must be in Base-64 encoded PEM format and include the -----BEGIN CERTIFICATE REQUEST----- and -----END CERTIFICATE REQUEST----- tags. Below is an example of a PEM-formatted CSR:

 -----BEGIN CERTIFICATE REQUEST-----
...CSR content...
-----END CERTIFICATE REQUEST-----

Device attributes

Add headers for required device attributes based on your device profile configuration:

Use device_identifier for the device ID.
For custom device fields, include the unique UUID of each field (for example, 35db4faa-899f-4aff-b0a2-10f73d7b198c).

Tip

To find UUIDs for custom fields, use Device Trust Manager REST API Get enrollment profile specification endpoint:

 GET {base_url}/devicetrustmanager/certificate-configuration-service/api/v1/enrollment-profile/{enrollment_profile_id}/enrollment-specification

Certificate request data rows

Each data row in the CSV represents an individual certificate request, with values corresponding to the header fields.

Note

There is no limit to the number of data rows, but the compressed ZIP file containing your CSV data must not exceed 200 MB.

Example CSV file

 "unique_identifier","subject.common_name","subject.organization_name","subject.organization_unit","san.other_name.hardware_module_name.serial_number","device_identifier","35db4faa-899f-4aff-b0a2-10f73d7b198c","extensions.subject_directory","csr"
"001","common name 01","Organization","Unit1,Unit2","AABBCCDD","Device01","Custom field value","{\"attribute1\":\"value1\",\"attribute2\":\"value2\"}","-----BEGIN CERTIFICATE REQUEST-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAr1Gkl8...\n-----END CERTIFICATE REQUEST-----"
"002","common name 02","Organization","Unit1,Unit2","AABBCCDD","Device02","Custom field value","{\"attribute1\":\"value3\",\"attribute2\":\"value4\"}","-----BEGIN CERTIFICATE REQUEST-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAr2Hgl8...\n-----END CERTIFICATE REQUEST-----"
"003","common name 03","Organization","Unit1,Unit2","AABBCCDD","Device03","Custom field value","{\"attribute1\":\"value5\",\"attribute2\":\"value6\"}","-----BEGIN CERTIFICATE REQUEST-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAr3Jkl9...\n-----END CERTIFICATE REQUEST-----"