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Prepare for Upcoming Mass Modification: Mass Mod Release Schedule


To facilitate a smooth rollout, the MAS Consolidation Mass Mod will be released during a two week period. Most Schedule contractors can expect to receive an email about the Mass Modification dated Jan. 31 to Feb. 14. If you belong to an excepted group please see special instructions below. Contractors must accept this Mass Mod by July 31, 2020 - failure to do so will result in offerings no longer being accessible on GSA eTools.


Mass Mod Timeline

Mass Modification Release Date

Legacy Schedule Number

Friday, 1/31/20

03FAC, 23V, 36, 48, 51V, 58I, 599

Monday, 2/3/20


Tuesday, 2/4/20

00CORP continued

Wednesday, 2/5/20


Thursday, 2/6/20

70 continued

Friday, 2/7/20

71,71 IIK, 72, 73,56, 66, 67

Monday, 2/10/20

736, 738X, 75, 751

Tuesday, 2/11/20

76, 78, 81 I B, 84 


Exceptions to Two Week Timeline

The following group of contracts will not be issued the Phase II Mass Mod until the dependent contract action is completed/resolved:  

  • Contracts with pending “Add SIN” or “Delete SIN” modifications: Contractors with pending add/delete SIN mods will not receive the Mass Mod until the add/delete SIN mod is reconciled (accepted, rejected, or withdrawn). We will issue the Mass Mod to contractors with pending Add/Delete SIN mods immediately AFTER these mods are reconciled.

Thank you for your continued partnership.

Please send questions to MAS PMO at maspmo@gsa.gov.


Register today for the Federal Acquisition Service Training Conference, April 14-16, 2020,  Atlanta, GA. Earn up to 20 CLPs in a variety of acquisition related topics. Free for all government attendees. Register at gsa.gov/FAST and join the conversation on social media using #FAST2020!

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