TSM Server 提示ANR8448E Scratch volume LTO01 from library TS2250 rejected报错？

TSM Server执行BA备份报错，通过schedule进行备份失败，手动在BA的GUI界面中备份成功，通过查看TSM Server的actlog中，提示ANR8448E Scratch volume LTO01 from library TS2250 rejected-volume name is already in use. 报错。
TSM Server7.1+library TS2250

详细报错日志如下：
01/07/2019 09:57:21 ANR8326I 077: Mount LTO volume SCRTCH R/W in drive

                  MT0.0.0.10 (mt0.0.0.10) of library TS2250 within 43
                  minutes.

01/07/2019 09:57:22 ANR8328I 077: LTO volume SCRTCH mounted in drive

                  MT0.0.0.10 (mt0.0.0.10). (SESSION: 228)

01/07/2019 09:57:22 ANR8448E Scratch volume LTO01 from library TS2250 rejected

                  - volume name is already in use. (SESSION: 228)

01/07/2019 09:57:22 ANR8336I Verifying label of LTO volume LTO01 in drive

                  MT0.0.0.10 (mt0.0.0.10). (SESSION: 228)

01/07/2019 09:57:43 ANR8468I LTO volume LTO01 dismounted from drive MT0.0.0.10

                  (mt0.0.0.10) in library TS2250. (SESSION: 228)

01/07/2019 09:57:43 ANR8326I 078: Mount LTO volume SCRTCH R/W in drive

                  MT0.0.0.10 (mt0.0.0.10) of library TS2250 within 60
                  minutes. (SESSION: 228)