211 -

Full name of the individual or business.

City, state (two-letter abbreviation), and ZIP code.

All uppercase letters are preferred for machine readability, and punctuation should be omitted except for the hyphen in the ZIP+4 code. 2. IBM POST Error Code 211

Street number, street name, and any secondary unit designators (e.g., APT 211).

To ensure a "proper" post for mail delivery, Section 211 of the USPS Postal Addressing Standards requires a standardized format to match ZIP+4 and City State files:

This code indicates a failure of the base 64K memory on the I/O channel .

If your query is about a computer not starting, specifically relates to IBM PS/2 systems .

This typically requires checking if memory modules are properly seated in their slots or replacing defective RAM chips. 3. Community Resource Helpline (2-1-1) 2 Postal Addressing Standards - Postal Explorer - USPS