Freeze Codes
Command Codes
DLN/IRN
Misc.
Transaction Codes
100

This freeze code will indicate Exam involvement.

What is -L freeze

100

Displays specific entity data for the account addressed such as taxpayer's TIN, Name, Address and Date of Birth. 

What is CC INOLES. 

100

This 14-digit number is assigned to every 1040x processed in the ADP system.

What is a Document Locator Number (DLN)?

100

This extends the statue of limitation for assessments (ASED) to six years when a taxpayer excludes a certain amount of gross income on their original return


The 25% omission rule

100

A TC 922 on an account indicates.

What is AUR involvement.

200

This freeze is set when a TC 570 post to an account. 

What is -R freeze.

200

These three command codes should be used to compare a second return with an original return on an account. 

What is CC TRDBV, IMFOL, RTVUE.

200

The Document Locator Number (DLN) composition includes how many parts.

What is 7.

200

This department works a Non-Filer Reject that does not meet SFR criteria. 

What is IMF AM.

200

This Transaction Code and Action Code would be used to indicate a duplicate return has been forwarded to Exam. 

What is 971, 013?

300

This letter is used to notify the taxpayer "We are unable to process your request because you did not respond to the authentication letter we previously sent. Once verified, your original return will be processed, and we can process your inquiry." 

What is 288C.

300

This command code is used to update dependent related credits for the current year and two prior years. 

What is DDBCK.

300

The taxpayer electronically files a 2024 amended return and request the refund to be direct deposited.  This IRN (reference number) should be included in the adjustment. 

What is 872? 

300

This condition refers to a situation where TIN becomes incorrectly associated between different taxpayer accounts. 

What is Mixed Entity.

300

This Transaction Code (TC) is used to release the -A freeze when a duplicate return is posted. 

What is TC 290.

400

This condition creates an E- freeze.

What is No posted TC 150 and a TC 977 is posted.

400

This IDRS command code is used to request a document for files.

What is CC ESTABD.

400

The fourth and fifth digits in the DLN indicate.

What is The type of document filed.

400

A TC 594 Closing Code (CC) 84 is present on the account indicate this condition. 

What is The tin was used as the secondary taxpayer on a previously filed married filing joint return. 

400

When multiple returns are posted to an account only one TRNS36 notice is generated based what Transaction Code (TC). 

What is TC 976.

500

When a TC976 posts to an account with a TC150 master file will generate a ____?

What is -A freeze

500

This IDRS Command Code should be used to determine if an account has prior Identity Theft involvement (i.e. TC971 AC 501/506/522

What is command code ENMOD

500

When adjusting Self-Employment, the following IRN would be used.

What is 889,878,879,895,896?

500

The taxpayer filed MFS on December 1st after a timely MFJ return was filed on the due date. The CSR should notify the taxpayer by.

What is - Send the MFS taxpayer a 105C to disallow the claim. 

500

When an Estimated Tax Penalty needs to be assessed on a 1040x, what transaction code should be used.

What is a TC 170.