Not able to transfer material from one bin to another in same st type

HI Friends,

I have a situation below.

1. Putaway Strategy 'Bulk'

2. I changed no. of SUs from 1000 to 9990 in OMM4

Now I am not able to move materail to existing bin and getting below error.

'Storage unit type S1 not compatible witth block definition' though Storgae unit of the SUs which are in the Bin are S1 only.

Kindly help to resolve.

Regards.