ORA-05802
user 'string' does not have sufficient signature-related privileges on blockchain or immutable table "string"."string"
Cause
An attempt was made to sign a row in a blockchain or immutable table or to secure a countersignature on such a row.
Action
For a user signature, ensure that the user inserted the row. For a delegate signature, ensure that the user has the SIGN privilege on the table. For a countersignature, ensure either that the user inserted the row, the user has the SIGN privilege on the table, or the table is in the user's schema.