2894071 - Solution Builder error: Activation ownership: Solution Z_SOLUTION_XX owned by <username> (/SMB/BBPRJ_INST153)

During checking or activation of a BP solution in the Solution builder, Implementation Assistant (transaction /n/SMB/BBI) there is an error raised:

"Solution Z_SOLUTION_XX finishes checking with errors

Message no. /SMB/BBPRJ_INST156"

while on the right side of the screen another error shows:

"Activation ownership: Solution Z_SOLUTION_XX owned by <username>

Message no. /SMB/BBPRJ_INST153"

 SAP S/4HANA

activation, best practice, solution builder, /SMB/BBPRJ_INST153, /SMB/BBPRJ_INST 153, activation owner , KBA , SV-CLD-ACT , S4H Best Practices – Generic Content Activation , SV-CLD-FRM-INF , Implementation Framework Infrastructure , Problem