Solana - Error getProgramAccounts

When making a complex call to a Solana RPC Node with the method getProgramAccounts, you may get an error looking as follows:

{
 "jsonrpc":"2.0",
 "error":{
  "code":-32010,
  "message":"Tokenkeg####### excluded from account secondary indexes; 
  this RPC method unavailable for key"
 },
 "id":1
}

From Solana Github, this error appears if a program is excluded from the secondary indices. [Tokenkeg...] with lots of accounts can be excluded from [getProgramAccounts] by RPC nodes as a consequence.

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Additional information is available at the following link.