https://userapps.support.sap.com/sap/support/knowledge/en/2292790
2292790 - Alter Table Failed to Unpartition That May Produce Message 11051, Level 16, State 3 - SAP...
A table fails to unpartition from a node that is just booted. A table fails to perform the alter table unpartition Unpartition table may hit an error 16060,...