Pulp 2 to Pulp 3 content migration fails with error: "ERROR: Non-archived yum repositories with ID [xx xx] have no distribution reference"

Issue

• The satellite-maintain content prepare command fails with the following error:

  Performing a check to verify everything that is needed has been migrated
                                                                       [FAIL]
  Failed executing foreman-rake katello:pulp3_post_migration_check, exit status 1:
  ERROR: Non-archived yum repositories with ID          [1674,1676,1831,1369,1659,1114,1048,957,1662,1802,1171,883,785,1665,1335,1065,1047,882,980,1333,914,1117,1337,1207,1736,956,1366,777,1026,796,886,1063,1804,1023,1723,1690,1064,891,880,800,915,1673,879,1691,1672,1049,789,979,1203,1148,775,1779,1022,1062,1626,1328,892,1622,] have no distribution reference
  

• The satellite-maintain content migration-stats command displays a few missing or unmigrated RPMs as shown below:

  ================================================================================
  Retrieve Pulp 2 to Pulp 3 migration statistics: 
  ============Migration Summary================
  Migrated/Total RPMs: 228248/228250
  Migrated/Total errata: 936455/936455
  Migrated/Total repositories: 795/795