3510137 - Error: "Requested object XXX is currently locked by user YYY" - SAP Cloud ALM

• Transport actions not working with SAP Cloud ALM Change and Deployment Management Feature for ABAP system
• Background job is creating the transport request, but when trying to release it, encounters an error:
  Job /SDF/CALM_CDM_TR_PROC_CL_DEP-<client> started
  Step 001 started (program /SDF/CALM_CDM_TSK_PROCESS, variant <ID>, user ID <user name>)
  Program /SDF/CALM_CDM_TSK_PROCESS started with destination <destination name>
  Call post request to URL: 'https://eu20.alm.cloud.sap/api/featuresService/v1/ odata/v4/FeatureService/readTransportsForProcessin gInSourceSystemV2
  Post request returned with status 200
  Creating 3 transports for destination <destination name>
  Releasing 1 transports for destination <destination name>
  Request ZZZ is unknown
  Requested object XXX is currently locked by user YYY
  Job canceled after system exception ERROR_MESSAGE

SAP Cloud ALM

CALM, CDM, TR, ABAP Transaction Checker , KBA , SV-CLM-IMP-FTR , Feature , Problem