1. Localization Information Guide
  2. Configure the 1094-C Transmission Manifest

Configure the 1094-C Transmission Manifest

Before you can submit your Affordable Care Act (ACA) info to the IRS, you need to update your Form 1094-C transmission manifest.

Use a standard text editor to set these values.

  • Unique transmission ID

  • Checksum number

  • Attachment byte size

For further info, see the following sections.

How you update the unique transmission ID

The XML schemas for Forms 1094-C and 1095-C include elements designed to uniquely identify ACA Information Returns (AIR) transmissions, submissions within the transmission, and records within the submission. The transmitter that generates the form data file for transmission to the IRS must generate these IDs and maintain them along with their associated transmissions. They use unique IDs to simplify and increase the precision of communications, corrections, and replacements.

The transmitter uniquely identifies each transmission by the unique transmission identifier (UTID) in the header.

The format for the UTID includes these fields separated by colons.

Field

What it does

UUID

Universally unique identifier (UUID) is an identifier standard defined by the Internet Engineering Task Force (IETF) in Request For Comments (RFC) 4122. The UUID consists of a 16-octet (128-bit) number. In its canonical form, a UUID is represented by 32 hexadecimal digits, displayed in five groups separated by hyphens. It uses the form 8-4-4-4-12 for a total of 36 characters (32 digits and 4 hyphens).

For example: 550e8400-e29b-41d4-a716-44665540000

  1. Use an online UUID generator to create this value, such as the Online UUID Generator.

  2. Open the Manifest file in a text editor, and enter the UUID you created.

    Don't change the rest of the data in that line.

Application ID

SYS12

Transmitter Control Code

5-character alphanumeric all-capital string that contains the transmitter's control code (TCC). Specify the TCC the IRS assigned the transmitter when you applied to file electronically.

Reserved

Empty field.

Request type

Must be T (Transactional).

How you set the checksum

Use an online checksum generator, such as OnlineMD5, to create a checksum number of SHA-256 type and then apply it to the manifest file. For further info, see Overview of Affordable Care Act Reporting in the Help Center.

After you have the checksum number, open manifest file in a text editor and enter the number.

How you set the attachment byte size

From File Explorer, right-click on the 1094-C form data file, and select Properties. Enter the file's size in bytes in the <irs:AttachmentByteSizeNum> tag of the manifest file.

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