Error: The field ‘CountryOfResidence’ with value data is missing

Error message

Validation failed on [FILE_ID]:
Form: Form84131[1] OwnerPartnerInformation[2]/CountryOfResidence[1]
Description: Partner/Shareholder Country of Residence
ReferenceNumber: 8
Requirement: Country abbreviations, a.k.a. country codes
Error: The field 'CountryOfResidence' with value '', data is missing.
Element Name: CountryOfResidence
XPath: /ReturnState[1]/ReturnDataState[1]/Form84131[1]/OwnerPartnerInformation[2]/CountryOfResidence[1]
XML Fragment:
Field Key: 0,0,0,0,0,0,0,0,0
Error Code: [CODE]
Error Reason: '' violates enumeration constraint of 'AF AX AL AG AQ AN AO AV AY AC AR AM AA AT AS AU AJ BF BA FQ BG BB BO BE BH BN BD BT BL BK BC BV BR IO VI BX BU UV BM BY CB CM CA CV CJ CT CD CI CH KT IP CK CO CN CF CG CW CR CS IV HR CU UC CY EZ DA DX DJ DO DR TT EC EG ES EK ER EN ET FK FO FM FJ FI FR FP FS GB GA GG GM GH GI GR GL GJ GQ GT GK GV PU GY HA HM VT HO HK HQ HU IC IN ID IR IZ EI IS IT JM JN JA DQ JE JQ JO KZ KE KQ KR KN KS KV KU KG LA LG LE LT LI LY LS LH LU MC MK MA MI MY MV ML MT IM RM MR MP MX MQ MD MN MG MJ MH MO MZ WA NR BQ NP NL NC NZ'

Solution

Open the K-1 aggregation file for the Mississippi 1065 return.
Locate the partner record identified in the error message.
Enter a valid 2-letter country code in the
CountryOfResidence
field. Enter
US
if the partner resides in the United States.
Save the K-1 aggregation file.
Do a full recompute, then recreate the e-file.