A strange pending operation that cannot be "Undone" or "Retried" (these are greyed-out in the admin console).
mail:~ #
mail:~ # curl -k --user xxxxx:yyyyyy -X GET https://10.10.110.166:9710/gwadmin-service/system/pending
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><list xmlns:ns2="http://www.w3.org/2005/Atom"><object xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="accessControlRecord"><accessRights>WRITE</accessRights><administratorDomainName>myDO</administratorDomainName><administratorId>USER.myDO.myPO.SomeUser</administratorId><administratorName>SomeUser</administratorName><administratorPostOfficeName>myPO</administratorPostOfficeName><administratorType>USER</administratorType><diagnosticId>151.781</diagnosticId><lastModifiedOp>ADD</lastModifiedOp><memberDomainName>relayDO</memberDomainName><memberId>DOMAIN.relayDO</memberId><memberObjectType>DOMAIN</memberObjectType><pendingOp>ADD</pendingOp><timeLastMod>1624533045000</timeLastMod></object><resultInfo><outOf>1</outOf></resultInfo></list>office-mail:~ #
mail:~ #
mail:~ #
Looks like it's a pending PO addition to a domain named relayDO. The relayDO domain is no longer available (deleted, server removed), it also may have never functioned.
Any ideas how to get rid of it?