Reprotect operations fails with the error ""Failed to reverse replication for failed over devices. SRA command 'reverseReplication' failed. Unexpected exception occured: System.FormatException: Input string was not in a correct format. at PureSRA"

Products

• VMware Live Recovery

Issue/Introduction

Symptoms:

• These issues are observed in environments configured using Pure Storage Array Based replication

• Reprotect operations fails with the below error

  "Failed to reverse replication for failed over devices. SRA command 'reverseReplication' failed. Unexpected exception occured: System.FormatException: Input string was not in a correct format. at PureSRA.SRMCommandHandlerBase.TryOnRestClientsUntilSuccess(SRMCommand command) in /app/Handlers/SRMCommandHandlerBase.cs:line 216 at PureSRA.SRMCommandHandlerBase.WriteResponse(SRMCommand command) in /app/Handlers/SRMCommandHandlerBase.cs:line 230 at PureSRA.SRMCommandHandlerBase.HandleCommand(SRMCommand command) in /app/Handlers/SRMCommandHandlerBase.cs:line 119 at PureSRA.PureSRA.Main(String[] args) in /app/PureSRA.cs:line 28 Please see logs at /srm/sra/log/reverseReplication_2025-#-#-06-24-16-3#######-3#######-####-####-####-###########.log"

Environment

VMware Live Site Recovery 9.x

Cause

• The Reprotect operation fails because the reverseReplication command issued by the Pure SRA is unable to remove snapshots on the Pure Array. 

• From the SRA reverseReplication logs, we can see that the command is failing with Invalid string format error
  
  [09/16/2025 10:24:04,ReverseReplication.cs:DeleteSnapshotsFromPrepareReverseReplication,W] Failed to eradicate idempotency snapshot in reverse replication.
[09/16/2025 10:24:04,ReverseReplication.cs:DeleteSnapshotsFromPrepareReverseReplication,V] Exiting
[09/16/2025 10:24:04,ReverseReplication.cs:ProcessCommand,V] Exiting
[09/16/2025 10:24:04,SRMCommandHandlerBase.cs:TryOnRestClientsUntilSuccess,V] Exception when trying to process command with current rest client pair.
[09/16/2025 10:24:04,SRMCommandHandlerBase.cs:TryOnRestClientsUntilSuccess,V] Input string was not in a correct format.
[09/16/2025 10:24:04,SRMCommandHandlerBase.cs:TryOnRestClientsUntilSuccess,V]    at System.Text.ValueStringBuilder.ThrowFormatError()
   at System.Text.ValueStringBuilder.AppendFormatHelper(IFormatProvider provider, String format, ParamsArray args)
   at System.String.FormatHelper(IFormatProvider provider, String format, ParamsArray args)
   at System.String.Format(String format, Object[] args)
   at PureSRA.PureSRALogger.Log(LogLevel logLevel, String formatString, Object[] parameters) in /app/PureSRALogger.cs:line 335

Resolution

To resolve this issue, please engage Pure storage vendor