Name that IRM
Erroneous Refunds
Freeze Codes
Unpostables
ERS
100

Used to identify the types of refund offsets

What is IRM 21.4.6.4 Refund Offset Research?

100

This transaction code sets the -U freeze

What is TC 844?

100

A TC 971 with AC 012-015 sets this freeze code

What is the -A freeze?

100

The taxpayer was sent a 5071C letter due to this open unpostable and reason code

What is UPC 126 RC 0?

100

This department issues the 12C letter

What is the Error Resolution System (ERS)?

200

Used to advise the TP of the time frame for an electronically filed, paper filed, and amended return

What is IRM 21.4.1.4 Refund Inquiry Response Procedures?

200

This letter is issued to taxpayer after a Category D erroneous refund is discovered

What is the 510C?

200

This freeze code is set due to the PATH Act

What is the C- freeze?

200

The taxpayer omitted the IP PIN on their return which caused this unpostable

What is UPC 147 RC 0?

200

Unworked error record that is usually a simple problem.

What is ERS status code 100?

300

TC 150 is blocked with 92 and the offset has not occurred. Use this is advise the taxpayer

What is IRM 21.4.6.6.4 Injured Spouse Inquiries?

300

An erroneous refund occurs because of an overstatement of prepaid credits by the taxpayer and falls under this category

What is category B?

300

A TC 290 with blocking series 77 or 78 adjustment sets this freeze code

What is the -G freeze?

300

Use this IAT Tool to locate, research, and assist in resolving unpostable codes

What is UP Histories?

300

If the case is closed in ERS, it cannot be referred to this department

What is the Taxpayer Advocate Service (TAS)?

400

Generally used to advise the taxpayer of how to protect their tax account information from identity theft

What is IRM 25.23.12.2 Identity Theft Telephone General Guidance?

400

Category A1 and A2 erroneous refund cases are referred to this function for further processing

What is examination?

400

Set with a TC 470 closing code 94

What is -J freeze?

400

Use this command code to leave a history to assist in resolving the upostable

What is command code UPCASZ?

400

ERS status code 349

What is a system problem?

500

The taxpayer calls and states that the bank sent their refund back to the IRS and provided them with a lead number

What is IRM 21.4.1.4.6 External Leads Program or Other Questionable Refund Inquiries?

500

A TC 470 with closing code 93 is input on an account for this reason

What is to hold all systemic notices and collection processed if the account is in balance due status?

500

A TC 810 is on the account and a 3176C was issued to the taxpayer

What is -E freeze?

500

Use this category code to close an unpostable that you created

What is misc (miscellaneous)?

500

If this was not received or lost, advise the taxpayer to provide a letter of explanation and include their TIN. 

What is the 12C letter?

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