No more than 40 "Roll-Up Summary" fields are allowed per object.

We are getting the above error when we try to deploy existing and new Rollups.
 
We get the same error even if we try to deploy only existing rollups or only new rollups.
 
Only way it is working is by  manually creating the rollup fields and then deploy. As this is not a best practice, any suggestions on resolving this issue would be highly appreciated.

No more than 40 "Roll-Up Summary" fields are allowed per object.

We are getting the above error when we try to deploy existing and new Rollups.
 
We get the same error even if we try to deploy only existing rollups or only new rollups.
 
Only way it is working is by  manually creating the rollup fields and then deploy. As this is not a best practice, any suggestions on resolving this issue would be highly appreciated.