There was a request to have DFSMSdss fall back to using EXCP, however the block size was either greater than the supported block size when using EXCP or the block size was found to be zero. If the block size was zero, it was either obtained from the tape or the tape had no label. DFSMSdss supports a block size up to 65 520 bytes when using EXCP.
Processing continues.
None.
If the block size is reported to be zero and the block size of the dump is known and less than or equal to 65 520 bytes, specify the block size in the JCL for the input volume's DD to allow the EXCP access method to be used.
DFSMSdss